Objective Biology for NEET

Rajiv Vijay

Chapter 2

Sexual Reproduction in Flowering Plant - all with Video Answers

Educators

Chapter Questions

Problem 1

Flowers convey important human feelings such as
(a) Love and affection
(b) Happiness and grief
(c) Mourning
(d) All of these

Anas Venkitta

Anas Venkitta

Numerade Educator

Problem 2

Flowers are considered as objects of
(a) Acsthetic value
(b) Ornamental value
(c) Religious and cultural value
(d) All of these

Anas Venkitta

Numerade Educator

Problem 3

Biologists consider flowers to be objects of
(a) Morphological marvels
(b) Embryological marvels
(c) Sites of sexual reproduction
(d) All of these

Anas Venkitta

Numerade Educator

Problem 4

When does plant decides to flower?
(a) In embryonic development
(b) During the appearance of flower buds
(c) Before the actual flower appear on plant
(d) All the above

Anas Venkitta

Numerade Educator

Problem 5

Identify $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ in this figure?
(a) A: Pollen grains, B: Filament (Stalk), C: Line of dehiscence, D: Pollen sacs $\begin{array}{ll}\text { (b) A: Line of dehiscence, B: Filament (Stalk), C: Pollen sacs, } & \text { D: Pollen grains }\end{array}$
$\begin{array}{lll}\text { (c) A: Filament (Stalk), } & \text { B: Pollen grains, } & \text { C: Line of dehiscence, D: Pollen sacs }\end{array}$ $\begin{array}{lll}\text { (d) A: Line of dehiscence, B: Pollen sacs, } & \text { C: Pollen grains, } & \text { D: Filament (Stalk) }\end{array}$

Hast Aggarwal

Numerade Educator

Problem 6

The initiation and development of floral primordium takes place by
(a) Only by hormonal changes in plant
(b) Only structural changes in plant
(c) Changes in seasonal variation
(d) Both by hormonal and structural changes in plant

Hast Aggarwal

Numerade Educator

Problem 7

Whorl of stamens in flower represents
(a) Gynoecium
(b) Androecium
(c) Calyx
(d) Corolla

Anas Venkitta

Numerade Educator

Problem 8

Whorl of carpel in flower represents
(a) Gynoecium
(b) Androecium
(c) Calyx
(d) Corolla

Anas Venkitta

Numerade Educator

Problem 9

What indicates 'A' in the below figure?
(a) Pollen grains
(b) Pollen sacs
(c) Generative cell
(d) Vacuoles

Anas Venkitta

Numerade Educator

Problem 10

Whorl of petals in flower represents
(a) Gynoecium
(b) Androecium
(c) Calyx
(d) Corolla

Anas Venkitta

Numerade Educator

Problem 11

Whorl of sepals in flower represents
(a) Androecium
(b) Gynoecium
(c) Calyx
(d) Corolla

Anas Venkitta

Numerade Educator

Problem 12

Stamens consists of which of the following parts?
(a) Filament
(b) Style, stigma
(c) Anther
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 13

The number and length of stamens in flowers are
(a) Variable in different species.
(b) Same in plants present in similar climatic condition.
(c) Variable and dependent on the amount of hormonal secretion.
(d) Variable in different species and depend on the seasonal variation.

Hast Aggarwal

Numerade Educator

Problem 14

Typical angiosperm anther is
(a) Unilobed and dithecous
(b) Bilobed and dithecous
(c) May be both (a) and (b)
(d) Bilobed and tetrathecous

Anas Venkitta

Numerade Educator

Problem 15

The anther in transverse section appears to be
(a) Diagonal
(b) Tetragonal
(c) Unilobed
(d) Mosaic

Anas Venkitta

Numerade Educator

Problem 16

What are A, B, C and D in this figure?
(a) A: Thalamus, B: Style, C: Ovary, D: Stigma
(b) A: Style, B: Ovary, C: Stigma, D: Thalamus
(c) A: Stigma, B: Style, C: Ovary, D: Thalamus
(d) A: Ovary, B: Stigma, C: Thalamus, D: Style

Anas Venkitta

Numerade Educator

Problem 17

Tetragonal anther consists of
(a) One microsporangia
(b) Two microsporangia
(c) Three microsporangia
(d) Four microsporangia

Anas Venkitta

Numerade Educator

Problem 18

How many microsporangia are there in each lobe of anther?
(a) One microsporangia
(b) Two microsporangia
(c) Three microsporangia
(d) Four microsporangia

Anas Venkitta

Numerade Educator

Problem 19

Pollen sacs develop from
(a) Microspore
(b) Microspore mother cell
(c) Microsporangium
(d) Megaspore

Anas Venkitta

Numerade Educator

Problem 20

Typical microsporangium appear in transverse section.
(a) Wavy
(b) Circular
(c) Oval
(d) Irregular

Anas Venkitta

Numerade Educator

Problem 21

Which one amongst the given perform the function of protection in typical microsporangium?
(A) Epidermis
(B) Endothecium
(C) Tapetum
(D) Middle layer
(a) $\mathrm{A}$ and $\mathrm{B}$
(b) $\mathrm{A}$ and $\mathrm{C}$
(c) $\mathrm{A}$ and $\mathrm{D}$
(d) $\mathrm{A}, \mathrm{B}$ and $\mathrm{D}$

Anas Venkitta

Numerade Educator

Problem 22

Which of the following layer of microsporangium provides nourishment to the developing anther?
(a) Middle layers
(b) Tapetum
(c) Endothecium
(d) Epidermis

Anas Venkitta

Numerade Educator

Problem 23

Function performed by the outer three layers of microsporangium?
(a) Protection to developing pollen
(b) Provides nourishment to developing pollen
(c) Helps in the dehiscence of anther to release pollen
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 24

Identify the parts $\mathrm{A}$ to $\mathrm{I}$ in this figure.
(a) A: Ovary, B: Anther, C: Filament, D: Nectariferous area, E: Sepal, F: Stigma, G: Style, H: Ovule, I: Petal
(b) A: Anther, B: Ovule, C: Stigma, D: Anther, E: Petal, F: Filament, G: Sepal, H: Nectariferous area, I: Ovary
(c) A: Ovary, B: Ovule, C: Nectariferous area, D: Sepal, E: Filament, F: Petal, G: Anther, H: Stigma, I: Style
(d) A: Style, B: Stigma, C: Anther, D: Petal, E: Filament, F: Sepal, G: Nectariferous area, H: Ovule, I: Ovary

Anas Venkitta

Numerade Educator

Problem 25

The microsporangium cells which posses dense cytoplasm and have more than one nucleus is the characteristic of
(a) Middle layers
(b) Tapctum
(c) Endothecium
(d) Epidermis

Anas Venkitta

Numerade Educator

Problem 26

In young anther the tissue occupying the centre of each microsporangium is called
(a) Megaspore mother cell
(b) Sporogenous tissue
(c) Parietal tissue
(d) None of these

Anas Venkitta

Numerade Educator

Problem 27

Identify $\mathrm{A}$ to $\mathrm{E}$ in this figure?
(a) A: Synergids, B: Egg, C: Central cell, $\quad$ D: 2 polar nuclei, E: Antipodals $\begin{array}{llll}\text { (b) A: Antipodals, B: Synergids, } & \text { C: Central cell, } & \text { D: Egg, } & \text { E: } 2 \text { polar nuclei }\end{array}$
(c) A: Synergids, B: Central cell, $\quad$ C: 2 polar nuclei, D: Antipodals, $\quad \mathrm{E}$ : Egg $\begin{array}{llll}\text { (d) A: Egg, } & \text { B: } 2 \text { polar nuclei, C: Antipodals, } & \text { D: Central cell, } & \text { E: Synergids }\end{array}$

Anas Venkitta

Numerade Educator

Problem 28

Arrange the following layers of microsporangium according to their presence from inside to outside.
(A) Endothecium
(B) Middle layer
(C) Tapetum
(D) Epidermis
(a) A, B, C, D
(b) B, A, C, D
(c) $\mathrm{D}, \mathrm{C}, \mathrm{B}, \mathrm{A}$
(d) $\mathrm{C}, \mathrm{B}, \mathrm{A}, \mathrm{D}$

Anas Venkitta

Numerade Educator

Problem 29

Sporogenous tissue of microsporangia is
(a) Groups of compactly arranges homogenous cells
(b) Occupies the centre of microsporangium
(c) Present inside young anther
(d) All the above

Hast Aggarwal

Numerade Educator

Problem 30

Each cell of microspore tetrad is
(a) $2 \mathrm{n}$
(b) $\mathrm{n}$
(c) Some n and some $2 \mathrm{n}$
(d) $3 \mathrm{n}$

Anas Venkitta

Numerade Educator

Problem 31

Which type of cell division occurs in the cell of sporogenous tissue to form microspore?
(a) Reduction division
(b) Equational division
(c) Both (a) and (b)
(d) Amitosis

Anas Venkitta

Numerade Educator

Problem 32

Formation of pollen from pollen mother cell is referred to as
(a) Pollenogenesis
(b) Megasporogenesis
(c) Microsporogenesis
(d) Ovulation

Anas Venkitta

Numerade Educator

Problem 33

Pollen grains are
(a) Microspore tetrad
(b) Dehydrated microspores
(c) Megaspore tetrad
(d) Pollen mother cells

Anas Venkitta

Numerade Educator

Problem 34

Male gametophyte in angiosperm is represented by
(a) Anther
(b) Androccium
(c) Microsporangium
(d) Pollen grain

Anas Venkitta

Numerade Educator

Problem 35

Pollen grains arc
(a) Spherical
(b) Oval
(c) Generally spherical
(d) Irregular

Anas Venkitta

Numerade Educator

Problem 36

Diameter of pollen grain is
(a) $20-50 \mu \mathrm{m}$
(b) $25-50 \mu \mathrm{m}$
(c) $30-50 \mu \mathrm{m}$
(d) $10-50 \mu \mathrm{m}$

Anas Venkitta

Numerade Educator

Problem 37

Exine of pollen is
(A) Hard outer layer of pollen grain
(B) Most resistant organic matter known.
(C) Layer made up of sporopollenin.
(D) Layer which can withstand high temperature, strong acids and alkali.
(E) Layer which cannot be degraded by any known enzyme.
Which one of the following is correct?
(a) $\mathrm{A}$ and $\mathrm{B}$
(b) A, B, C and D
(c) $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ and $\mathrm{E}$
(d) $\mathrm{A}, \mathrm{C}$ and $\mathrm{E}$

Anas Venkitta

Numerade Educator

Problem 38

What are the parts $\mathrm{A}$ and $\mathrm{B}$ in this figure?
(a) A: Generative cell, B: Vegetative cell
(b) A: Tapetal cell, B: Generative cell
(c) A: Vegetative cell, B: Generative cell
(d) A: Homogenous cell, B: Tapetal cell

Anas Venkitta

Numerade Educator

Problem 39

Sporopollenin is
(a) Most resistant organic matter known
(b) Present in exine of pollen grain
(c) Absent in the germ pole of pollen grain
(d) All of these

Anas Venkitta

Numerade Educator

Problem 40

Pollen grains can be preserved as fossil because
(a) They vary from species to species
(b) They have variety of architecture
(c) They are made up of sporopollenin
(d) They exhibit a fascinating array of pattern and design

Hast Aggarwal

Numerade Educator

Problem 41

Which part of pollen exhibit a fascination array of pattern and design?
(a) Intine
(b) Exine
(c) Germ pore
(d) Nonc of these

Anas Venkitta

Numerade Educator

Problem 42

Intine of pollen grain is
(a) Inner layer of pollen grain
(b) A thin and continuous layer
(c) Made up of cellulose and pectin
(d) All of these

Anas Venkitta

Numerade Educator

Problem 43

What does 'A' indicate in this figure?
(a) Scutellum
(b) Shoot apex
(c) Radicle
(d) Coleorhiza

Anas Venkitta

Numerade Educator

Problem 44

What ' $\mathrm{C}$ ' is showing in the given figure?
(a) Epiblast
(b) Scutellum
(c) Shoot apex
(d) Radicle

Anas Venkitta

Numerade Educator

Problem 45

Identify the part 'D'.
(a) Radicle
(b) Root cap
(c) Coleorhiza
(d) Epiblast

Anas Venkitta

Numerade Educator

Problem 46

What is 'G' in the given figure?
(a) Scutellum
(b) Coleorhiza
(c) Coleoptile
(d) Shoot apex

Anas Venkitta

Numerade Educator

Problem 47

What is 'B' in the given figure?
(a) Scutellum
(b) Coleorhiza
(c) Coleoptile
(d) Shoot apex

Anas Venkitta

Numerade Educator

Problem 48

Pollen grains are mature when
(a) It contains vegetative and generative cell
(b) It contains only single haploid cell
(c) Contains two haploid cell
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 49

Thin and continuous layer of pollen made up of cellulose and pectin
(a) Intine
(b) Exine
(c) Germ pore
(d) None of these

Anas Venkitta

Numerade Educator

Problem 50

Pollen grains are shed in 2 celled stage in
(a) $>90 \%$ Angiosperm plant
(b) $<50 \%$ Angiosperm plant
(c) $>60 \%$ Angiosperm plant
(d) $<40 \%$ Angiosperm plant

Anas Venkitta

Numerade Educator

Problem 51

Generate cell floats in the cytoplasm of
(a) Vegetative cell
(b) Microspore mother cell
(c) Pollen mother cell
(d) Megasporangium

Anas Venkitta

Numerade Educator

Problem 52

The below figure represents
(a) Self-pollinated flowers
(b) Cross-pollinated flowers
(c) Chasmogamous
(d) None of these

Anas Venkitta

Numerade Educator

Problem 53

The bigger cell that receives abundant food and has irregularly shaped nucleus is called
(a) Generative cell
(b) Vegetative cell
(c) Germ cell
(d) Sperm cell

Anas Venkitta

Numerade Educator

Problem 54

The spindle-shaped cell with dense cytoplasm and nucleus in pollen grain is called
(a) Vegetative cell
(b) Generative cell
(c) Sperm cell
(d) Egg cell

Anas Venkitta

Numerade Educator

Problem 55

Match the following \begin{tabular}{ll}
\hline Column - I & Column - II \\
\hline A. Vegetative cell & 1. Sporopollenin \\
B. Generative cell & 2. Spindle-shaped cell \\
C. Exine & 3. Large sized and has abundant food reserve \\
D. Intine & 4. Cellulose and pectin \\
\hline
\end{tabular}

Anas Venkitta

Numerade Educator

Problem 56

Male gametes in angiosperms are formed by
(a) Mitotic division in vegetative cell
(b) Meiotic division in pollen mother cell
(c) Meiotic division in vegetative cell
(d) Mitotic division in generative cell

Anas Venkitta

Numerade Educator

Problem 57

The pollen grains are shed in 3 celled stage in
(a) $>60 \%$ Angiospermic plant
(b) $>70 \%$ Angiospermic plant
(c) $<40 \%$ Angiospermic plant
(d) $<20 \%$ Angiospermic plant

Anas Venkitta

Numerade Educator

Problem 58

Which of the following statement is correct?
(A) Pollen grains are shed in 2 -celled stage in $>40 \%$ plants.
(B) Pollen grains are shed in 3 -celled stage in $<60 \%$ plant.
(C) Generative cell divides meiotically to form male gametes.
(D) Intine of pollen is made up of sporopollenin.
(a) A, B, C
(b) All are correct
(c) All are wrong
(d) Only $C$

Hast Aggarwal

Numerade Educator

Problem 59

The plant which came in India as a contaminant with imported wheat is?
(a) Vinca
(b) Parthenium
(c) Striga
(d) Orobanche

Anas Venkitta

Numerade Educator

Problem 60

The below figure represents
(a) Self-pollinated flowers
(b) Cross-pollinated flowers
(c) Cleistogamous flowers
(d) None of these

Anas Venkitta

Numerade Educator

Problem 61

Which one of the following is incorrect?
(A) Parthenium or carrot gases causes pollen allergy.
(B) Vegetative cell of pollen has abundant food reserve.
(C) All pollen's cause severe allergies and bronchial afflictions.
(D) Sporopollenin is the most resistant organic matter known.
(a) All are correct
(b) $\mathrm{A}$
(c) $\mathrm{B}$
(d) $\mathrm{C}$

Hast Aggarwal

Numerade Educator

Problem 62

What are $\mathrm{A}$ and $\mathrm{B}$ in this figure?
(a) A: Chasmogamous flower,
B: Cleistogamous flower
(b) A: Cleistogamous flower,
B: Chasmogamous flower
(c) A: Chasmogamous flower,
B: Chasmogamous flower
(d) A: Cleistogamous flower,
B: Self-pollinated flower

Anas Venkitta

Numerade Educator

Problem 63

Pollen grains
(A) Represent gametophytic phase of plant
(B) Can cause severe allergies like asthma and bronchitis
(C) Are rich in nutrient
(D) Are used as food supplements
(E) Are available in form of tables and syrups in market of western countries
(a) Only A is correct
(b) All are correct
(c) All are wrong
(d) Only A, B and $\mathrm{C}$ are correct

Hast Aggarwal

Numerade Educator

Problem 64

Viability of pollen grains depend upon
(a) A particular species
(b) Prevailing temperature
(c) Humidity
(d) All of the above

Anas Venkitta

Numerade Educator

Problem 65

Rice pollen grains are viable for
(a) $6.0 \mathrm{mins}$
(b) 30 mins (approx)
(c) 60 mins (approx)
(d) 40 mins

Anas Venkitta

Numerade Educator

Problem 66

Pollens are stored in
(a) $\mathrm{O}$ xygen $\left(-196^{\circ} \mathrm{C}\right)$
(b) Nitrogen $\left(-196^{\circ} \mathrm{C}\right)$
(c) Oxygen $\left(196^{\circ} \mathrm{C}\right)$
(d) Nitrogen $\left(+196^{\circ} \mathrm{C}\right)$

Anas Venkitta

Numerade Educator

Problem 67

Syncarpous condition is referred to as
(a) Gynoecium containing single pistil
(b) More than one pistil fused together
(c) More than one pistil free from one another
(d) Gynoecium containing many pistils

Hast Aggarwal

Numerade Educator

Problem 68

Landing platform for pollen grains is
(a) Stigma
(b) Style
(c) Ovary
(d) None of them

Anas Venkitta

Numerade Educator

Problem 69

Bulged basal part of pistil is
(a) Stigma
(b) Style
(c) Ovary
(d) None of these

Anas Venkitta

Numerade Educator

Problem 70

Elongated slender part of pistil is
(a) Stigma
(b) Style
(c) Ovary
(d) None of these

Anas Venkitta

Numerade Educator

Problem 71

Megasporangia is referred to as
(a) Ovule
(b) Ovary
(c) Gynoecium
(d) All of these

Anas Venkitta

Numerade Educator

Problem 72

What are parts $\mathrm{A}$ to $\mathrm{E}$ in this below figure?
(a) A: Plumule, B: Cotyledons, C: Hypocotyl, D: Radicle, E: Root cap
(b) A: Root cap, B: Hypocotyl, C: Plumule, D: Radicle, E: Cotyledons
(c) A: Cotyledons, B: Root cap, C: Cotyledons, D: Plumule, E: Hypocotyl
(d) A: Plumule, B: Cotyledons, C: Root cap, D: Radicle, E: Hypocotyl

Anas Venkitta

Numerade Educator

Problem 73

Plants having single ovule in ovary are
(a) Wheat
(b) Paddy
(c) Mango
(d) All of these

Anas Venkitta

Numerade Educator

Problem 74

What represents 'A' in the following figure?
(a) Cotyledons
(b) Scutellum
(c) Shoot apex
(d) Radicle

Anas Venkitta

Numerade Educator

Problem 75

More than one ovule is found in the ovary of
(a) Wheat
(b) Paddy
(c) Papaya
(d) None of these

Anas Venkitta

Numerade Educator

Problem 76

The stalk attaching ovule to placenta is
(a) Funiculus
(b) Hilum
(c) Raphe
(d) Chalaza

Anas Venkitta

Numerade Educator

Problem 77

The junction between ovule and funiculus is
(a) Placenta
(b) Hilum
(c) Raphe
(d) Chalaza

Anas Venkitta

Numerade Educator

Problem 78

The tips on the ovule where integument are absent are called
(a) Germ pore
(b) Micropyle
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 79

The end opposite to micropyles end is called
(a) Funicle
(b) Chalaza
(c) Germ pore
(d) Hilum

Anas Venkitta

Numerade Educator

Problem 80

The mass of cell present inside the integuments of megasporangium having abundant food reserve is
(a) Ovule
(b) Nucellus
(c) Sporogenous cells
(d) None of these

Anas Venkitta

Numerade Educator

Problem 81

Female gametophyte of angiosperm is referred to as
(a) Mcgasporangium
(b) Megaspore
(c) Embryo sac
(d) Nuclcus

Anas Venkitta

Numerade Educator

Problem 82

Embryo sac is formed by
(a) Reduction division in megaspore
(b) Equational division in megaspore
(c) Reduction division followed by cquational division in megaspore mother cell
(d) Both (b) and (c)

Anas Venkitta

Numerade Educator

Problem 83

How many embryo sacs are present in an ovule?
(a) One embryo sac
(b) More than one embryo sac
(c) One cmbryo sac (generally)
(d) Two cmbryo sacs

Anas Venkitta

Numerade Educator

Problem 84

What is functional megaspore referred to as?
(a) The megaspore that degenerates after formation.
(b) The megaspore that only develops in female gametophyte.
(c) The megaspore that undergoes reduction division.
(d) The megaspore that is functionally inactive.

Anas Venkitta

Numerade Educator

Problem 85

Identify the parts of $\mathrm{A}$ to $\mathrm{F}$ in the following figure?
(a) A: Filiform apparatus, B: Polar nuclei, C: Antipodals, D: Synergids, E: Egg, F: Central cell
(b) A: Antipodals, B: Polar nuclei, C: Central cell, D: Egg, E: Synergids, F: Filiform apparatus
(c) A: Antipodals, B: Central cell, C: Polar nuclei, D: Egg, F: Synergids, G: Filiform apparatus
(d) A: Eggs, B: Central cell, C: Filiform apparatus, D: Polar nuclei, E: Antipodals, F: Synergids

Anas Venkitta

Numerade Educator

Problem 86

Monosporic development is referred to as
(a) Single megaspore developing in the embryo sac
(b) Single megaspore mother cell undergoing meiosis
(c) Presence of single ovule in ovary
(d) None of them is correct

Anas Venkitta

Numerade Educator

Problem 87

What is the ploidy level of nucleus, MMC, functional megaspore and female gametophyte?
(a) $2 \mathrm{n}, \mathrm{n}, 2 \mathrm{n}, 2 \mathrm{n}$
(b) $2 \mathrm{n}, \mathrm{n}, 2 \mathrm{n}, \mathrm{n}$
(c) $2 \mathrm{n}, 2 \mathrm{n}, \mathrm{n}, \mathrm{n}$
(d) $\mathrm{n}, 2 \mathrm{n}, \mathrm{n}, \mathrm{n}$

Anas Venkitta

Numerade Educator

Problem 88

How many mitotic division takes place for complete development of embryo sac?
(a) 4
(b) 3
(c) 2
(a) 1

Anas Venkitta

Numerade Educator

Problem 89

The inside three mitotic division which occurs in the megaspore are
(a) Followed by cytoplasmic division immediately.
(b) Strictly free nuclear not immediately followed by cell wall formation.
(c) Wall formation occurs after the completion of the second mitosis.
(d) Wall formation will never occur.

Hast Aggarwal

Numerade Educator

Problem 90

Typical female gametophyte is
(a) 7-celled 8 nucleate
(b) 6-celled 8 nucleate
(c) 4 -celled 6 nucleate
(d) 5 -celled 6 nucleate

Anas Venkitta

Numerade Educator

Problem 91

What is 'A' in this figure?
(a) Megaspore mother cell
(b) Megaspore tetrad
(c) Embryo sac
(d) Micropyle

Anas Venkitta

Numerade Educator

Problem 92

Egg apparatus consists of
(a) Two synergids
(b) Two antipodals
(c) Egg cell
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 93

The cellular thickening at the tip of micropyle is
(a) Synergids
(b) Egg apparatus
(c) Filiform apparatus
(d) All of these

Anas Venkitta

Numerade Educator

Problem 94

The cells located at chalazal ends are called as
(a) Synergids
(b) Antipodals
(c) Egg apparatus
(d) None of these

Anas Venkitta

Numerade Educator

Problem 95

Identify the parts $\mathrm{A}$ and $\mathrm{B}$ in this figure.
(a) A: Megaspore tetrad, B: Nucleus
(b) A: Central cell, B: Megaspore dyad
(c) A: Nucellus, B: Megaspore mother cell
(d) A: Nucellus, B: Central cell

Anas Venkitta

Numerade Educator

Problem 96

The central cell
(a) Contains two haploid nuclei
(b) Has two polar nuclei
(c) Located in the centre of embryo sac
(d) All of these

Anas Venkitta

Numerade Educator

Problem 97

The cells in embryo sac located at the micropyles end are
(a) Egg apparatus
(b) Only synergid
(c) Antipodal cell
(d) Central cell

Anas Venkitta

Numerade Educator

Problem 98

The male and female gametes of angiosperm are respectively
(a) Motile, non-motile
(b) Non-motile, motile
(c) Motile, motile
(d) Non-motile, non-motile

Anas Venkitta

Numerade Educator

Problem 99

After three meiotic divisions in the functional megaspore, the gametophyte (embryosac) has how many cells.
(a) 7 cells
(b) 4 cells
(c) 5 cells
(d) 8 cells

Anas Venkitta

Numerade Educator

Problem 100

Pollination is essential in angiosperm plants because
(a) It decreases the time required for fertilization.
(b) Both of the male and female gametes are non-motile and they need to be brought together for fertilization.
(c) It is a useless process
(d) Both (a) and (b)

Hast Aggarwal

Numerade Educator

Problem 101

The below figure represents
(a) Anther
(b) Typical stamen
(c) Pollen grain
(d) Microsporangium

Anas Venkitta

Numerade Educator

Problem 102

Pollination in plants is referred to as
(a) Fusion of male and female gametes.
(b) Transfer of pollen grain to stigma of pistil.
(c) Germination of pollen of stigma.
(d) Production of pollen grew inside the microsporangium.

Hast Aggarwal

Numerade Educator

Problem 103

Autogamy refers to
(a) Transfer of pollen grain to stigma of another flower
(b) Transfer of pollen grain to stigma of same flower
(c) Both (a) and (B)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 104

What is observed in a normal flower which opens and exposes the stigma and anther?
(a) Autogamy is absent
(b) Complete autogamy is rare
(c) Always autogamous
(d) Always xenogamous

Anas Venkitta

Numerade Educator

Problem 105

Plants which produce two types of flowers are
(a) Viola
(b) Oxalis
(c) Commelina
(d) All of thesc

Anas Venkitta

Numerade Educator

Problem 106

The two types of flowers found in autogamous plant is
(a) Flower similar to flowers of other species with exposed anthers and stigma.
(b) Flowers which do not open at all.
(c) Both (a) and (b)
(d) Flowers with only stigma and no anther.

Anas Venkitta

Numerade Educator

Problem 107

flowers produce assured seed set cven in the absence of pollinators
(a) Cleistogamous flower
(b) Chasmogamous flowers
(c) Both (a) and (b)
(d) Flowers showing geitonogamy

Anas Venkitta

Numerade Educator

Problem 108

A type of cross pollination involving a pollinating agent is genetically similar to autogamy since pollen grain come from same plant, it is called
(a) Xenogamy
(b) Geitonogamy
(c) Autogamy
(d) All of these

Anas Venkitta

Numerade Educator

Problem 109

What are the parts $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ and $\mathrm{E}$ in the below figure?
(a) A: Tapetum, B: Middle layers, C: Microspore mother cells, D: Endothecium, E: Epidermis
(b) A: Middle layers, B: Endothecium, C: Tapetum, D: Epidermis, E: Microspore mother cell
(c) A: Endothecium, B: Epidermis, C: Tapetum, D: Endothecium, E: Microspore mother cell
(d) A: Epidermis, B: Endothecium, C: Middle layers, D: Microspore mother cells, E: Tapetum

Anas Venkitta

Numerade Educator

Problem 110

The only type of pollination during which pollination brings genetically different types of pollen grains to stigma
(a) Xenogamy
(b) Geitonogamy
(c) Autogamy
(d) All of these

Anas Venkitta

Numerade Educator

Problem 111

Majority of plants uses which types of pollinating agents?
(a) Biotic
(b) Abiotic
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 112

What are $\mathrm{A}$ and $\mathrm{B}$ in the following figure?
(a) A: Vacuoles, B: Intine
(b) A: Vacuoles, B: Nucleus
(c) A: Nucleus, B: Intine
(d) A: Exine, B: Intine

Anas Venkitta

Numerade Educator

Problem 113

proportion of plants uses abiotic agents for pollination.
(a) Major
(b) Most
(c) Small
(d) Can be small or major

Anas Venkitta

Numerade Educator

Problem 114

factor is responsible for the contact of pollen with stigma in wind and water pollinated plants.
(a) Luck
(b) Chance
(c) Time
(d) Temperature

Anas Venkitta

Numerade Educator

Problem 115

Enormous amount of pollens are produced in wind and water pollinated plants
(a) To compensate for uncertainties for contact of pollen with stigma.
(b) To compensate for loss of pollen grains.
(c) To ensure pollination for large number of ovules present.
(d) Both (a) and (b)

Hast Aggarwal

Numerade Educator

Problem 116

Most of the common abiotic pollinating agent for plant is
(a) Anemophily
(b) Hydrophily
(c) Pollination by bees
(d) Pollination by ants

Anas Venkitta

Numerade Educator

Problem 117

Light and non-sticky pollen grains are favourable for
(a) Water pollinated plant
(b) Wind pollinated plant
(c) Plants with fatherly sigma
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 118

Which of the following are true for wind pollinated plants?
(A) Well exposed statements
(B) Large and often feathery stigma
(C) Single ovule in each ovary
(D) Large number of flower packed into an inflorosence
(a) Only A
(b) Only B and C
(c) Only $\mathrm{C}$
(d) All are correct

Hast Aggarwal

Numerade Educator

Problem 119

Wind pollinated flowers have
(a) Single ovule in one ovary
(b) More than one ovule in ovary
(c) Been packed into an inflorosence
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 120

The tassels of corn cob are
(a) Stigma and style
(b) Meant to trap pollen grains in wind
(c) Both (a) and (b)
(d) All are incorrect

Anas Venkitta

Numerade Educator

Problem 121

Wind pollination is commonly found in
(a) Large trees
(b) Shrubs
(c) Grasses
(d) All of these

Anas Venkitta

Numerade Educator

Problem 122

Identify $\mathrm{A}$ to $\mathrm{G}$ in this figure.
(a) A: Plumule, B: Endosperm, C: Pericarp, D: Radicle, E: Colcorhiza, F: Scutellum, G: Colcoptile
(b) A: Coleorhiza, B: Radicle, C: Endosperm, D: Pericarp, E: Plumule, F: Coleoptile, G: Scutellum
(c) A: Pericarp, B: Scutellum, C: Endosperm, D: Coleoptile, E: Plumule, F: Coleorhiza, G: Radicle
(d) A: Pericarp, B: Endosperm, C: Scutellum, D: Coleoptile, E: Plumule, F: Radicle, G: Coleorhiza

Anas Venkitta

Numerade Educator

Problem 123

Pollination by water is
(a) Rare in flowering plants
(b) Limited to about 30 genera
(c) Most of the genera are monocotyledons
(d) All the above

Anas Venkitta

Numerade Educator

Problem 124

Water is the main medium of transport for male gametes of
(a) Algae
(b) Bryophytes
(c) Pteridophyte
(d) All of these

Anas Venkitta

Numerade Educator

Problem 125

The distribution of pteridophytes and bryophytes is limited to some geographical zones only
(a) Because their spores can germinate in only specific kind of soil only.
(b) Because they require water for fertilization.
(c) Because they have only specific pollination which are available in narrow geographical range.
(d) Only some weather conditions permit fruit formation in them.

Hast Aggarwal

Numerade Educator

Problem 126

What indicates 'A' in the below figure?
(a) Pericarp
(b) Scutellum
(c) Carpels
(d) Radicle

Anas Venkitta

Numerade Educator

Problem 127

Which of the following is incorrect for equate plants?
(A) Vallisneria and Hydrilla are fresh water plants pollinated by wind.
(B) Zostera a marine grass uses water as its pollinating agent.
(C) Water hyacinth and water lily are pollinated by insects or wind.
(D) Most of the aquatic plant flowers emerges out of water and are pollinated by wind or insects.
(a) Only B
(b) Only A
(c) Only A, B and $\mathrm{C}$
(d) All are incorrect

Hast Aggarwal

Numerade Educator

Problem 128

Which one of the following is correct for aquatic plants?
(a) All aquatic plants use water for pollination.
(b) Not all aquatic plants use water for pollination.
(c) Vallisneria flowers are pollinated by water under the water surface.
(d) All the above

Hast Aggarwal

Numerade Educator

Problem 129

Which one of the following is correct for Vallisneria?
(A) It grows in fresh water.
(B) Female flowers or pollen grains reach the surface by long stalk.
(C) Male flowers are released on to the surface of water.
(D) Pollen grains are carried passively by water currents.
(a) Only A
(b) Only A and B
(c) Only A, B and $\mathrm{C}$
(d) $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$

Paras Aggarwal

Numerade Educator

Problem 130

In water pollinated species
(A) Pollen grains are long and ribbon like
(B) All pollen grains are protected from getting wet
(C) Flowers are not very colourful
(D) They do not produce nectar
(a) Only A and B are correct
(b) Only $\mathrm{A}$ and $\mathrm{B}$ are wrong
(c) All are correct
(d) All are wrong

Paras Aggarwal

Numerade Educator

Problem 131

Identify $\mathrm{A}$ and $\mathrm{B}$ in this figure.
(a) A: Polar nuclei, B: Male gametes
(b) A: Female gametes, B: Polar nuclei
(c) A: Synergid, B: Egg cell
(d) A: Male gametes, B: Synergid

Anas Venkitta

Numerade Educator

Problem 132

Amongst the pollinating agent which one is the most dominant?
(a) Butterflies and flies
(b) Bees
(c) Beetles and wasps
(d) Moths and birds

Anas Venkitta

Numerade Educator

Problem 133

Which of the following is correct in reference to animal pollinated plants?
(a) Butterflies, flics, bectles, wasps, ants, moths and bats are common pollinating agents.
(b) Rodents, lizards and primates are also pollinators in some specics.
(c) Animal pollinated plants are specifically adapted for particular species.
(d) All the above

Paras Aggarwal

Numerade Educator

Problem 134

What are the parts $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ and $\mathrm{E}$ in this figure?
$\begin{array}{llll}\text { (a) A: Egg cell, } & \text { B: Synergid, } & \text { C: Antipodal, D: Polar nuclei, E: Pollen tube }\end{array}$
(b) A: Pollen tube, B: Antipodal, C: Polar nuclei, D: Egg cell, E: Synergid
(c) A: Pollen tube, B: Egg cell, $\quad$ C: Polar nuclei, D: Antipodal, E: Synergid
$\begin{array}{llll}\text { (d) A: Synergid, } & \text { B: Pollen tube, C: Egg cell, } & \text { D: Antipodal, } & \text { E: Polar nuclei }\end{array}$

Anas Venkitta

Numerade Educator

Problem 135

Insect pollinated plants are
(a) Large and colourful
(b) Fragrant
(c) Rich in nectar
(d) All of these

Anas Venkitta

Numerade Educator

Problem 136

The foul odour secreted by flowers are pollinated by
(a) Flies and beetles
(b) Wasps and ants
(c) Birds
(d) None of these

Anas Venkitta

Numerade Educator

Problem 137

The reward produced by plants to their animal visitors is in the form of
(a) Nectar
(b) Pollen grain
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 138

Which one of the following is correct for animal pollinated plants?
(a) Nectar and pollen grains are usual floral rewards.
(b) To harvest the rewards from the flower, animal come in contact with anther and stigma.
(c) Animal carrying pollen when come in contact with stigma, it brings about pollination.
(d) All the above

Paras Aggarwal

Numerade Educator

Problem 139

Amorphophallus provide floral rewards in the form of
(a) Providing safe place to lay eggs
(b) Tallest flower
(c) Both (a) and (b)
(d) None of thesc

Anas Venkitta

Numerade Educator

Problem 140

Which of the following is correct for the relationship existence between moth and yucca plant?
(a) Moth and the plant cannot complete their life cycle without each other.
(b) Moth deposits egg in the locule of the ovary and the flower and in turn flower gets pollinated by the moth.
(c) Larva of the moth comes out of the eggs as the seeds start developing.
(d) All the above

Paras Aggarwal

Numerade Educator

Problem 141

What indicates $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ in the below figure?
(a) A: Radicle, B: Plumule, C: Cotyledon, D: Suspensor
(b) A: Plumule, B: Suspensor, C: Radicle, D: Cotyledon
(c) A: Suspensor, B: Radicle, C: Plumule, D: Cotyledon
(d) A: Cotyledon, B: Suspensor, C: Cotyledon, D: Radicle

Anas Venkitta

Numerade Educator

Problem 142

Seed is
(a) Fertilized ovule
(b) Fertilized endosperm
(c) Modification of integument
(d) Formed from pericarp

Anas Venkitta

Numerade Educator

Problem 143

Typical seed consists of
(a) Seed coat
(b) Cotyledon
(c) Embryo axis
(d) All of these

Anas Venkitta

Numerade Educator

Problem 144

All are examples of albuminous seeds except
(a) Wheat
(b) Sunflower
(c) Castor
(d) Groundnut

Anas Venkitta

Numerade Educator

Problem 145

The following figure represents
(a) Globular embryo
(b) Heart-shaped embryo
(c) Zygote
(d) Syngamy

Anas Venkitta

Numerade Educator

Problem 146

Persistent nucleus perisperm is found in
(a) Wheat and maize
(b) Pea + ground nut
(c) Barley and castor
(d) Black paper + bect

Anas Venkitta

Numerade Educator

Problem 147

Wheat is the ploidy of perisperm
(a) $\mathrm{n}$
(b) $2 \mathrm{n}$
(c) $3 \mathrm{n}$
(d) $4 \mathrm{n}$

Anas Venkitta

Numerade Educator

Problem 148

Select the total number of albuminous seed from the following. Pea, Groundnut, Wheat, Maize, Barely, Castor, Sunflower
(a) 4
(b) 5
(c) 2
(d) 6

Paras Aggarwal

Numerade Educator

Problem 149

Mature seed contains how much moisture generally?
(a) $10-15 \%$ by mass
(b) $5-10 \%$ by mass
(c) $25-30 \%$ by mass
(d) $40 \%$ by mass

Anas Venkitta

Numerade Educator

Problem 150

Select the false statement from the following.
(a) Persistent nucleus is the perisperm.
(b) Integuments of ovule harden as though protective seed coat.
(c) Micropyle remains as a small pore in seed coat and facilitates the entry of oxygen and water into seed during germination.
(d) General metabolic activity of embryo is high.

Paras Aggarwal

Numerade Educator

Problem 151

The favourable conditions available for germination are
(a) Adequate moisture
(b) Oxygen
(c) Suitable temperature
(d) All of these

Anas Venkitta

Numerade Educator

Problem 152

Example of false fruit
(a) Apple
(b) Strawberry
(c) Cashew
(d) All of these

Anas Venkitta

Numerade Educator

Problem 153

Thalamus takes part in fruit formation in
(a) Guava
(b) Orange
(c) Strawberry
(d) Mango

Anas Venkitta

Numerade Educator

Problem 154

Identify the parts $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ in this figure.
$\begin{array}{lll}\text { (a) A: Seed coat, } & \text { B: Endosperm, C: Cotyledon, } & \text { D: Hypocotyl root axis }\end{array}$
(b) A: Cotyledon,
B: Seed coat, C: Hypocotyl root axis, D: Endosperm
$\begin{array}{lll}\text { (c) A: Endosperm, } & \text { B: Cotyledon, C: Seed coat, } & \text { D: Hypocotyl root axis }\end{array}$
(d) A: Hypocotyl root axis, B: Endosperm, C: Seed coat, D: Cotyledon

Anas Venkitta

Numerade Educator

Problem 155

Which of the following is an example of dry fruit?
(a) Groundnut
(b) Mustard
(c) Both (a) and (b)
(d) Mango

Anas Venkitta

Numerade Educator

Problem 156

Fruit develops from
(a) Sepals
(b) Petals
(c) Thalamus
(d) Ovary

Anas Venkitta

Numerade Educator

Problem 157

Fruit developed without fertilization is known as
(a) Parthenocarpy
(b) Amphimixis
(c) Apomixis
(d) Polyembryony

Anas Venkitta

Numerade Educator

Problem 158

Which is true about parthenocarpic fruit?
(a) Seedless
(b) Banana is an example
(c) Can be induced by growth hormones
(d) All of these

Anas Venkitta

Numerade Educator

Problem 159

Select the false statement.
(a) Hard seed coat provides protection to young embryo.
(b) Generally seed is the product of sexual reproduction, so they generate new genetic combination leading to variation.
(c) Seeds have better adaptive strategies for dispersal to new habitat and help the species to colonize in other areas.
(d) Pollination and fertilization in angiosperm depend on water.

Paras Aggarwal

Numerade Educator

Problem 160

Which oldest seed is excavated from Arctic Tundra?
(a) Lupin arcticus
(b) Phoenix dactylitera
(c) Solanum nigrum
(d) Raphanus sativus

Anas Venkitta

Numerade Educator

Problem 161

Phoenix dactylifera is
(a) A 2000 year old viable seed
(b) A type of date palm
(c) Excavated from king Herod's palace near the Dead sea
(d) All the above

Anas Venkitta

Numerade Educator

Problem 162

Apomixis is seen in
(a) Asteraceae
(b) Grasses
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 163

Apomixis means
(a) Fruit without seed
(b) Fruit with seed
(c) Seed without fertilization
(d) Fruit without fertilization

Anas Venkitta

Numerade Educator

Problem 164

Polyembryony is
(a) One embryo in one seed
(b) More than one embryo in a seed
(c) More seed in one embryo
(d) Seed development without fertilization

Anas Venkitta

Numerade Educator

Problem 165

Polyembryony is seen in
(a) Citrus fruits
(b) Coconut
(c) Date palm
(d) Pineapple

Anas Venkitta

Numerade Educator

Problem 166

Which one of the following is correct for yucca plant?
(a) Moth species and yucca plant cannot complete their life cycles without each other.
(b) The moth deposits in egg in the locule of ovary of yucca plant.
(c) The larva of the moth came out of the eggs as the seed starts developing of yucca
(d) All the above

Paras Aggarwal

Numerade Educator

Problem 167

The devices developed by plants to discourage self-pollination include
(A) In some species, the pollen release and receptive stigma are not synchronized.
(B) In some species, the anther and stigma are placed at different positions, so they do not come in contact.
(C) Self-incompatibility
(a) All are correct
(b) A and B only
(c) A only
(d) B only

Paras Aggarwal

Numerade Educator

Problem 168

Dioecy is the mechanism for some plants to
(a) Promote autogamy
(b) Promote self-fertilization
(c) Promote cross pollination
(d) All are incorrect

Anas Venkitta

Numerade Educator

Problem 169

In Castor and maize plant, flowers are
(a) Unisexual
(b) Both male and female flowers on same plants (monoecious)
(c) Both male and female flowers on different plants
(d) All are incorrect

Anas Venkitta

Numerade Educator

Problem 170

Autogamy and geitonogamy is absent in
(a) Papaya
(b) Maize
(c) Castor
(d) All are correct

Anas Venkitta

Numerade Educator

Problem 171

The pollen pistil interaction refers to
(a) Pistil's ability to recognize the pollen
(b) Acceptance of pollen to promote post-pollination events
(c) Both are incorrect
(d) Both (a) and (b) are correct

Anas Venkitta

Numerade Educator

Problem 172

The acceptance and rejection by continuous dialogue between pollen grain and pistil mediated by chemical components of pollen and pistil result in
(a) Autogamy
(b) Pollen pistil interaction
(c) Geitonogamy
(d) Pollination

Anas Venkitta

Numerade Educator

Problem 173

During pollen pistil the interaction chemical components are released from
(a) Only pollen
(b) Only pistil
(c) Both pollen and pistil
(d) The ovary

Anas Venkitta

Numerade Educator

Problem 174

What happens when the pollen falls on the stigma?
(a) Pollination
(b) Reject of pollen
(c) Only the compatible pollen germinates
(d) Autogamy

Anas Venkitta

Numerade Educator

Problem 175

The pore from which the pollen tube germinates
(a) Seed pore
(b) Germ pore
(c) Intine
(d) Exinc

Anas Venkitta

Numerade Educator

Problem 176

Which way of pollen to ovary is sequentially correct?
(a) Ovary $\rightarrow$ Style $\rightarrow$ Stigma
(b) Style $\rightarrow$ Stigma $\rightarrow$ Ovary
(c) Stigma $\rightarrow$ Ovary $\rightarrow$ Style
(d) Stigma $\rightarrow$ Style $\rightarrow$ Ovary

Anas Venkitta

Numerade Educator

Problem 177

What indicates 'A' in the above figure?
(a) Cotyledon
(b) Hypocotyl root axis
(c) Seed coat
(d) Endosperm

Anas Venkitta

Numerade Educator

Problem 178

What indicates ' $\mathrm{C}$ ' in the above figure?
(a) Shoot apical meristem
(b) Root tip
(c) Cotyledon
(d) Seed coat

Anas Venkitta

Numerade Educator

Problem 179

What indicates ' $\mathrm{F}$ ' in the above figure?
(a) Root tip
(b) Shoot apical meristem
(c) Cotyledon
(d) Endosperm

Anas Venkitta

Numerade Educator

Problem 180

What indicates 'D' in the above figure?
(a) Seed coat
(b) Cotyledon
(c) Shoot apical meristem
(d) Hypocotyl root axis

Anas Venkitta

Numerade Educator

Problem 181

During pollination in plants which shed pollens in 2 -celled stage, the cells are called as
(a) Two vegetative cell
(b) Two generative cell
(c) Both are correct
(d) One vegetative and one generative cell

Anas Venkitta

Numerade Educator

Problem 182

Generative cell in pollen tube divides and forms
(a) One male gamete
(b) Two male gamete
(c) Three male gamete
(d) Four male gamete

Anas Venkitta

Numerade Educator

Problem 183

The plants in which pollen are shed in 3-celled stage contain?
(a) Two male gametes only
(b) A large vegetative cell only
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 184

What indicates 'A' in the following figurc?
(a) Micropyle
(b) Cotyledon
(c) Endosperm
(d) Scutellum

Anas Venkitta

Numerade Educator

Problem 185

The pollen tube after reaching the ovary enters inside the ovule generally through which part of ovule?
(a) Chalazal end
(b) Micropyle end
(c) Any of these
(d) Integument of ovule

Anas Venkitta

Numerade Educator

Problem 186

The pollen enters one of the synergids through
(a) Micropyles end
(b) Filiform apparatus
(c) Integument
(d) Both (a) and (b)

Anas Venkitta

Numerade Educator

Problem 187

The knowledge of pollen pistil interaction is helpful to plant breeders in which manner?
(a) Manipulating pollen-pistil interaction
(b) To get desired hybrids in incompatible pollination
(c) None of them
(d) Both (a) and (b) are correct

Paras Aggarwal

Numerade Educator

Problem 188

Which one of the following is correct for artificial hybridization?
(A) Combine desirable characters to produce superior varieties.
(B) Approach towards crop improvement programme.
(C) Desired pollen grains are used for pollination.
(D) Stigma is exposed to receive pollen.
(a) All are correct
(b) Only A
(c) Only $\mathrm{A}$ and $\mathrm{B}$
(d) Only A, B and C

Paras Aggarwal

Numerade Educator

Problem 189

Artificial hybridization is achieved by
(a) Emasculation
(b) Bagging
(c) Both are required
(d) None of these

Anas Venkitta

Numerade Educator

Problem 190

Emasculation is
(a) Removal of anther from unisexual flowering using a pair of forceps.
(b) Removal of anther from flower bud after its dehisces using a pair of forceps.
(c) Removal of anther from bisexual flower bud before its dehisces using a pair of forceps.
(d) All the above

Anas Venkitta

Numerade Educator

Problem 191

Emasculated flowers are covered with a bag of suitable size; the process is referred to as
(a) Emasculation
(b) Bagging
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 192

Why bagging is done in an emasculated flower?
(a) To prevent contamination of its stigma with unwanted pollen.
(b) To pollinate the stigma with required anthers only.
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 193

Emasculation is not required in flowers with
(a) Only having pistil (uniscxual)
(b) Having both pistil and anthers (biscxual)
(c) Having only anthers (unisexual)
(d) All are correct

Anas Venkitta

Numerade Educator

Problem 194

The female parent plants produce unisexual flowers
(a) Do not require cmasculation
(b) Requires cmasculation
(c) The flowers are bagged during bud stage
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 195

During syngamy
(a) Male gamete fuses with two polar nuclear
(b) Male gamete fuses with egg cell
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 196

Primary endosperm nucleus is a result of
(a) Fusion of two polar nuclei with male gamete
(b) Fusion of egg cell with male gamete
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 197

Triple fusion is a result of
(a) Fusion of three haploid nuclei
(b) Fusion of two polar nuclei with male gamete
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 198

Double fertilization is
(A) Unique to flowering plant
(B) Results in formation of zygote and primary endosperm cell.
(C) A process in which triple fusion and syngamy takes place.
(D) A process in which triple fusion only takes place.

Anas Venkitta

Numerade Educator

Problem 199

Triple fusion results in $\quad$ while syngamy results in
(a) Zygote and endosperm
(b) Endosperm and zygote
(c) Both form of zygote
(d) Both fern endosperm

Anas Venkitta

Numerade Educator

Problem 200

Identify $\mathrm{A}$ and $\mathrm{B}$ in this figure.
(a) A: Ovary, B: Syncarpous ovary
(b) A: Filament, B: Ovary
(c) A: Stigma, B: Filament
(d) A: Syncarpous ovary, B: Stigma

Anas Venkitta

Numerade Educator

Problem 201

Endosperm is a product of $\quad$ and embryo is a product of
(a) Triple fusion, syngamy
(b) Syngamy, triple fusion
(c) Syngamy, Syngamy
(d) Triple fusion, Triple fusion

Anas Venkitta

Numerade Educator

Problem 202

Post-fertilization events do not include
(A) Formation of primary endosperm cell
(B) Maturation of ovules in seed
(C) Formation of ovary into fruit
(D) Formation of embryo inside seed
(a) Only $\mathrm{A}$
(b) Only B
(c) Only $\mathrm{C}$
(d) None of these

Anas Venkitta

Numerade Educator

Problem 203

Which of the following precedes the other?
(a) Development of embryo before endosperm
(b) Endosperm developing before embryo
(c) Both the development of embryo and endosperm occurs simultaneously
(d) All the above

Paras Aggarwal

Numerade Educator

Problem 204

Which one of the following is correct for endosperm?
(a) The cells of this tissue are filled with reserve food material.
(b) Used for nutrition of developing embryo.
(c) PEN undergoes nuclear division followed by cytokinesis.
(d) All the above

Paras Aggarwal

Numerade Educator

Problem 205

Endosperm is earlier and then develops into
(a) cellular, nuclear
(b) nuclear, cellular
(c) cellular, cellular
(d) nuclear, nuclear

Anas Venkitta

Numerade Educator

Problem 206

The number of nuclei in free nuclear endosperm before cellularization is
(a) Fixed
(b) Varies greatly
(c) Fixed in species
(d) None of these

Anas Venkitta

Numerade Educator

Problem 207

Coconut water is $\quad$ part of endosperm
(a) Cellular
(b) Free nuclear
(c) Cellular as well as nuclear
(d) Neither cellular nor free nuclear

Anas Venkitta

Numerade Educator

Problem 208

White kernel of coconut is which part of endosperm?
(a) Cellular
(b) Free nuclear
(c) Cellular as well as nuclear
(d) Neither cellular nor free nuclear

Anas Venkitta

Numerade Educator

Problem 209

Endosperm is completely consumed during seed formation in
(a) Pea, castor and coconut
(b) Castor and coconut
(c) Pea and beans
(d) Groundnut and castor

Anas Venkitta

Numerade Educator

Problem 210

Endosperm persist in mature seed of
(a) Pea, castor and coconut
(b) Castor and coconut
(c) Pea and beans
(d) Groundnut and castor

Anas Venkitta

Numerade Educator

Problem 211

Development of embryo takes place at
(a) Chalazal end of embryo sac
(b) Micropyle end of embryo sac
(c) Near the integument of embryo sac
(d) All of these

Anas Venkitta

Numerade Educator

Problem 212

Zygote divides after the formation of endosperm
(a) To provide assured nutrition to develop the cndosperm.
(b) To providc assured nutrition to dcvelop cmbryo.
(c) None of these
(d) Both (a) and (b)

Anas Venkitta

Numerade Educator

Problem 213

The development of embryo in both monocotyledons and dicotyledons
(a) Same
(b) Differ greatly
(c) Biennials in early staples of development
(d) Both (b) and (c)

Anas Venkitta

Numerade Educator

Problem 214

Which of the following is correct?
(a) Proembryo $\rightarrow$ Mature embryo $\rightarrow$ Globular embryo
(b) Proembryo $\rightarrow$ Globular embryo $\rightarrow$ Mature embryo
(c) Globular embryo $\rightarrow$ Proembryo $\rightarrow$ Mature embryo
(d) Mature embryo $\rightarrow$ Globular embryo $\rightarrow$ Proembryo

Anas Venkitta

Numerade Educator

Problem 215

The portion of embryo above the cotyledon is called and below the cotyledon is called as
(a) Epicotyl, hypocotyl
(b) Hypocotyl, epicotyl
(c) Plumule, radical
(d) Radical and plumule

Anas Venkitta

Numerade Educator

Problem 216

Epicotyl terminates into
(a) Stem tip
(b) Root tip
(c) Plumule
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 217

Hypocotyl terminates into
(a) Root tip
(b) Stem tip
(c) Plumule
(d) Both (a) and (c)

Anas Venkitta

Numerade Educator

Problem 218

Embryo of monocotyledon possess only
(a) Two cotyledon
(b) One cotyledon
(c) Scutellum
(d) Both (b) and (c)

Anas Venkitta

Numerade Educator

Problem 219

The root cap of monocot is covered in
(a) Coleoptile
(b) Coleorhiza
(c) Root tip
(d) None of these

Anas Venkitta

Numerade Educator

Problem 220

The leaf primordia is enclosed in hollow foliar structure called as
(a) Coleoptile
(b) Coleorhiza
(c) Root tip
(d) None of these

Anas Venkitta

Numerade Educator

Problem 221

Identify $\mathrm{A}$ and $\mathrm{B}$ in this figure.
(a) A: Thalamus, B: Endocarp
(b) A: Thalamus, B: Achene
(c) A: Endocarp, B: Mesocarp
(d) A: Mesocarp, B: Endocarp

Anas Venkitta

Numerade Educator

Problem 222

Assertion: Pollen grains are well preserved as fossils. Reason: Pollen posses sporopollenin.

Anas Venkitta

Numerade Educator

Problem 223

Assertion: Pollen tables is used as a food supplement. Reason: Pollen grains are rich in nutrient.

Anas Venkitta

Numerade Educator

Problem 224

Assertion: Pollen tube enters the ovule through micropyle. Reason: Pollen tube enters in one of the synergids through filiform apparatus.

Anas Venkitta

Numerade Educator

Problem 225

Assertion: Coconut water is a cellular endosperm. Reason: White kernel of coconut is a free nuclear endosperm.

Anas Venkitta

Numerade Educator

Problem 226

Assertion: Most of the zygote divides only after certain amount of endosperm is formed. Reason: This is an adaptation to provide assumed nutrition to the developing embryo.

Paras Aggarwal

Numerade Educator

Problem 227

Assertion: Embryos of monocotyledons posses only one cotyledon. Reason: In the grass family the cotyledon is called scutellum.

Anas Venkitta

Numerade Educator

Problem 228

Assertion: Parthenocarpic fruits are seedless Reason: Parthenocarpic fruits develop without fertilization.

Anas Venkitta

Numerade Educator

Problem 229

Assertion: Angiosperm can colonize is other areas easily. Reason: Angiosperms have seeds and seeds have better adoptive strategies for dispersal to new habitats.

Paras Aggarwal

Numerade Educator

Problem 230

Assertion: Seed is the basic tool for agriculture. Reason: Dehydration and dormancy of mature seed is not crucial for the storage of seeds.

Anas Venkitta

Numerade Educator

Problem 231

Assertion: Polyembryony is found in all angiosperm. Reason: All angiosperm are produced by apomixis.

Anas Venkitta

Numerade Educator

Problem 232

Assertion: Exine of pollen grain is discontinuous layer. Reason: Exine absent at germ pores.

Anas Venkitta

Numerade Educator

Problem 233

Assertion: Pollen grains of some species can cause asthma. Reason: Pollen grains of some species are act as allergens.

Anas Venkitta

Numerade Educator

Problem 234

Assertion: Pollen bank can be formed for crop breeding programmes. Reason: Pollen grain of many species can be stored for year in liquid nitrogen $\left(-196^{\circ} \mathrm{C}\right)$

Paras Aggarwal

Numerade Educator

Problem 235

Assertion: Wind pollinated plant have large feathery stigma. Reason: Feathery stigma easily traps air-borne pollen grains.

Anas Venkitta

Numerade Educator

Problem 236

Assertion: Water pollinated species have mucilaginous covering on pollen grains. Reason: Mucilage covering protect pollen grain from wetting.

Paras Aggarwal

Numerade Educator

Problem 237

Assertion: Majority of flowering plant have bisexual flower still they show cross pollination. Reason: Continued self-pollination results in inbreeding depression.

Paras Aggarwal

Numerade Educator

Problem 238

Assertion: Self incompatibility is genetic mechanism to prevent self pollination. Reason: It promotes germination of pollen from same plant or same flower on stigma.

Paras Aggarwal

Numerade Educator

Problem 239

Assertion: Artificial hybridisation requires emasculation in bisexual flower. Reason: Emasculation is removal another before their dehiscence so it prevent self pollination.

Anas Venkitta

Numerade Educator

Problem 240

Assertion: The ploidy of primary endosperm nucleus (PEN) in angiosperm is $3 \mathrm{n}$. Reason: PEN is formed by triple fusion.

Paras Aggarwal

Numerade Educator

Problem 241

Assertion: Endosperm development occurs before embryo development. Reason: Cells of endosperm are filled with reserve food material and act as source of nutrition for developing embryo.

Paras Aggarwal

Numerade Educator