Objective Biology for NEET

Rajiv Vijay

Chapter 9

Strategies for Enhancement in Food Production - all with Video Answers

Educators

Chapter Questions

Problem 1

Which of the following techniques/processes are used to enhance food production?
(a) Embryo transfer technology
(b) Tissue culture technology
(c) Animal husbandry and plant breeding
(d) All of these

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Problem 2

Find out the incorrect statement.
(a) Animal husbandry is the agricultural practice of breeding and raising livestock.
(b) More than 70 per cent of the world's livestock population is in India and China.
(c) Dairying is the management of animals for milk and its products for human consumption.
(d) Hissardale is a new breed of sheep developed in Punjab by crossing Bikaneri rams and Merino ewes.

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Problem 3

Animal husbandry deals with the care and breeding of livestock like
(a) Buffaloes and cows
(b) Pig and horses
(c) Sheep, camel and goat
(d) All of these

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Problem 4

Fisheries include rearing, catching and selling of which of the following organisms?
(a) Fish
(b) Molluscs (shell-fish)
(c) Crustaceans (prawn, crab)
(d) All of these

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Problem 5

In dairy farm management, we deal with processes and systems that are responsible for
(a) Increase in yield of milk
(b) Improvement in quality of milk
(c) Both (a) and (b)
(d) None of these

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Problem 6

Good breeds should have
(a) High yielding potential under climatic conditions of the area
(b) Resistance to disease
(c) Improved quality of the yield
(d) All of these

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Problem 7

For realizing good yielding potential which of the following are required?
(a) Animal should be housed well and provided with adequate water.
(b) Maintain disease-free animals.
(c) Feeding should be in scientific manner along with good quality and quantity of fodder.
(d) All the above

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Problem 8

The word 'poultry' is used to refer the meat of
(a) Chicken and ducks
(b) Turkey
(c) Geese
(d) All of these

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Problem 9

How can we prevent the spreading of the flu in case when some chicken are infected in poultry form?
(a) Select these chickens
(b) Kill selected chicken and burn them
(c) Kill selected chickens and bury them deep inside earth
(d) All the above

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Problem 10

(a) A-Improved breed of cattle-Jersey
(b) B-Improved breed of chickens - Leghorn
(c) C-Sterile-Mule
(d) All are correct

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Problem 11

The term 'breed' means
(a) A group of animals related by descent and similar in most of the characters like general appearance, feature, size and configurations.
(b) A group of animals which depend on each other.
(c) A group of animals living in a same habitat.
(d) A group of animals which can't reproduce with each other.

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Problem 12

Select the incorrect combination.
(a) Class of domesticated fowl (birds) used for food and eggs-Poultry
(b) Breeding between animals of the same breed - Inbreeding
(c) Breeding between different breeds - Outbreeding
(d) Keeping honeybees for the production of honey-Pisciculture

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Problem 13

Bee-keeping is known as
(a) Pisciculture
(b) Silviculture
(c) Apiculture
(d) Aquaculture

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Problem 14

The following are freshwater fishes except
(a) Catla
(b) Rohu
(c) Common carp
(d) Mackerel

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Problem 15

The following are marine water fishers except
(a) Hilsa
(b) Sardines
(c) Pomfrets
(d) Rohu

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Problem 16

Which of the following points are important for successful bee-keeping?
(a) Knowledge of nature and habits of bees
(b) Catching and hiving of swarms (group of bees)
(c) Management of beehives during different seasons
(d) All the above

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Problem 17

Keeping beehives in crop fields during flowering period causes
(a) Increased pollination efficiency
(b) Increasing yield of crop
(c) Increasing yield of honey
(d) All of these

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Problem 18

Example of interspecific hybridization
(a) Hissardale
(b) Mule
(c) Jersey
(d) Leghorn

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Problem 19

In MOET _________ cell stage, the fertilized egg are recovered non-surgically and transferred to surrogate mothers.
(a) $8-32$
(b) $2-4$
(c) $6-8$
(d) $4-6$

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Problem 20

Hissardale is a new breed of sheep developed in Punjab by crossing
(a) Bikaneri ewes and Merino rams
(b) Dolly and Merino rams
(c) Ajmeri ewes and Merino rams
(d) Jersey and Bikaneri ewes

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Problem 21

Mule is produced by cross-breeding
(a) Male horse and female horse
(b) Male donkey and female horse
(c) Female donkey and male horse
(d) Male donkey and female donkey

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Problem 22

Green revolution was dependent to a large extent on plant breeding techniques for the development of high yielding and disease resistant varieties in
(a) Wheat
(b) Maize
(c) Rice
(d) All of these

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Problem 23

Which of the following is the most important character or trait that the breeders have tried to incorporate in plants first?
(a) Resistance to pathogens (virus, fungi and bacteria)
(b) Increase tolerance to insect pest
(c) Increased tolerance to environmental stress
(d) Increased crop yield

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Problem 24

The entire collection (of plants/seeds) having all the diverse allele for all genes in a given crop is called
(a) Gene bank
(b) Tissue culture
(c) Genetic engineering
(d) Germplasm collection

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Problem 25

Which process of plant breeding technique is the most time-consuming and tedious?
(a) Collection of variability
(b) Cross hybridization among the selected parents
(c) Evaluation and selection of parents
(d) Selection and testing of superior recombinants

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Problem 26

Self-pollination for several generations create
(a) Heterozygosity
(b) Homozygosity
(c) Hemizygosity
(d) Aneuploidy

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Problem 27

Which is not a step in breeding a new genetic variety of crop?
(a) Collection of variability
(b) Evaluation and selection of parent
(c) Self-hybridization among the selected parents
(d) Selection and testing of superior recombinants

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Problem 28

Testing, release and commercialization of new cultivar include
(a) Evaluation in research field.
(b) Recoding performance of cultivar under ideal fertilizer application, irrigation and crop management practice.
(c) Evaluation in farmer's field for at least three growing seasons at several locations in a country.
(d) All the above

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Problem 29

In India agriculture accounts for approx _________ % of India’s GDP and employs nearly _________ % of the population.
(a) 33,62
(b) 62,33
(c) 50,50
(d) 60,40

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Problem 30

P1 542 is a hybrid variety of
(a) Maize
(b) Wheat
(c) Rice
(d) Garden pea

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Problem 31

Which of the following plant hybrids are successfully developed in India?
(a) Maize
(b) Jowar
(c) Bajara
(d) All of these

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Problem 32

The development of several high yielding varieties of wheat and rice in the mid _____ through plant breeding techniques lead to the Green Revolution in India.
(a) $1950 \mathrm{~s}$
(b) $1960 \mathrm{~s}$
(c) $1970 \mathrm{~s}$
(d) $1980 \mathrm{~s}$

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Problem 33

In 1963 several variety of wheat such as _________ and _________, which were high yielding and disease resistance, were introduced all over the wheat growing belt of India.
(a) Sonalika, Kalyan sona
(b) Sonalika, IR - 8
(c) Sonalika, Taichung Native-I
(d) Kalyan sona, Jaya

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Problem 34

Semi-dwarf varieties of rice developed in India are
(a) Sonalika and Kalyan sona
(b) IR-8 and Taichung Native-I
(c) Jaya and Ratna
(d) Altas 66 and Himgiri

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Problem 35

Semi-dwarf varieties of rice were derived from
(a) Sonalika and Kalyan sona
(b) IR - 8 and Taichung Native-I
(c) Jaya and Ratna
(d) Altas 66 and Himgiri

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Problem 36

Taichung Native I variety of rice were from which country?
(a) India
(b) Philippines
(c) Taiwan
(d) Japan

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Problem 37

All of the given options are true about Saccharum barberi except
(a) Grown in North India
(b) Poor yield
(c) Poor sugar content
(d) High sugar content

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Problem 38

All of the given options are true about Saccharum officinarum except
(a) Grown in South India
(b) Thicker stem
(c) High sugar content
(d) Grow well in North India

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Problem 39

Match the column-I (Plant) with Column-II (Variety)
$$
\begin{array}{ll}
\hline \text { Column-I } & \text { Column-II } \\
\hline \text { 1. Wheat } & \text { A. Altas - 66 } \\
\text { 2. Sugar cane } & \text { B. Saccharum barberi } \\
\text { 3. Okra } & \text { C. Pusa A - 4 } \\
\text { 4. Chilli } & \text { D. Pusa Vadabahar } \\
\text { 5. Rice } & \text { E. Jaya } \\
\hline
\end{array}
$$
(a) $1-\mathrm{A}, 2-\mathrm{B}, 3-\mathrm{C}, 4-\mathrm{D}, 5-\mathrm{E}$
(b) $1-\mathrm{B}, 2-\mathrm{D}, 3-\mathrm{A}, 4-\mathrm{E}, 5-\mathrm{C}$
(c) $1-\mathrm{D}, 2-\mathrm{A}, 3-\mathrm{E}, 4-\mathrm{C}, 5-\mathrm{B}$
(d) $1-\mathrm{C}, 2-\mathrm{E}, 3-\mathrm{B}, 4-\mathrm{A}, 5-\mathrm{D}$

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Problem 40

Select the incorrect match.
(a) SCP-Single Cell Protein
(b) IRRI-International Rice Research Institute
(c) MOET-Multiple Ovulation Embryo Transfer Technology
(d) IUCN-International Union for Conservation of Nation

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Problem 41

Select the correct match.
(a) Plant breeding -Purposeful manipulation of plant species in order to create desired plant types that are better suited for cultivation gives better yield and are disease resistance.
(b) Gene bank-The entire collection of plant/seeds having all the diverse alleles for all genes in a given crop.
(c) Fishery-Industry devoted to the catching, processing or selling of fish only.
(d) MOET-It is used for herd improvement. In this method, a cow is administered hormones, with LH-like activity, which lead to super-ovulation (i.e., produce $6-8$ eggs/cycle).

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Problem 42

Which combination of qualities is first priority of plant breeder?
(A) Increased yield
(B) Increased quality of food
(C) Increased resistance to pathogens
(D) Increased tolerance to environmental stresses
(a) $\mathrm{A}$ and $\mathrm{B}$ only
(b) $\mathrm{C}$ and D only
(c) All A, B, C, D
(d) A, B, and C only

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Problem 43

Fill in the blanks Column-I (Crop), Column-II (Variety), Column-III (Resistance to disease).
$$
\begin{array}{lll}
\hline \text { Column-I } & \text { Column-II } & \text { Column-III } \\
\hline \text { Wheat } & \text { A } & \text { Lear and strip rust } \\
\text { Brassica } & \text { B } & \text { C } \\
\text { Cowpea } & \text { Pusa komal } & \text { D } \\
\text { Chilli } & \text { E } & \text { Chilli mosaic virus, Tobacco mosaic virus and leaf curl } \\
\hline
\end{array}
$$
(a) A-Karan rai, B-Himgiri, C-Bacterial blight, D-White rust, E-Pusa swarnim
(b) A-Himgiri, B-Karan rai, C-White rust, D-Bacterial blight, E-Pusa sadabahar
(c) A-Pusa sadabahar, B-Himgiri, C-White rust, D-Pusa swarnim, E-White rust
(d) A-Bacterial blight, B-White rust, C-Karan rai, D-Himgiri, E-Pusa sadabahar

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Problem 44

Thefollowing are varieties of Wheat except
(a) Altas-66
(b) Himgiri
(c) I R-8
(d) Sonalika

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Problem 45

Which of the following is/are variety/varieties of cauliflower?
(a) Pusa shubhra
(b) Pusa komal
(c) Pusa snowball $\mathrm{K}-1$
(d) Both (a) and (c)

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Problem 46

In which plant, resistance to yellow mosaic virus and powdery mildew were induced by mutations?
(a) Flat bean
(b) A. esculentus
(c) Mung bean
(d) Pusa A-4

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Problem 47

Resistance to _________ in bhindi was transferred from a wild species and resulted in a new variety of A. esculentus called _________.
(a) Yellow mosaic virus, pusa gaurav
(b) Chilly mosaic virus, pusa sadabahar
(c) Yellow mosaic virus, parbhani Kranti
(d) Whist rust, pusa swarnim

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Problem 48

Find out the incorrect statement.
(a) Conventional breeding is often constrained by the availability of limited number of disease resistance genes.
(b) Transfer of resistance gene is achieved by sexual hybridization between the target and source plant.
(c) Inducing mutations in plant through various means and then screening the plant materials for resistance sometimes leads to desirable genes being identified.
(d) It is not possible to induce mutations artificially through use of chemicals or radiation like gamma radiation.

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Problem 49

Maize offers resistance to maize stem borers by
(a) High aspartic acid
(b) Low nitrogen content
(c) Low sugar content
(d) All of these

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Problem 50

Match column-I (Plant Part) with Column-II (Insect Resistance).
$$
\begin{array}{ll}
\hline \text { Column-I } & \text { Column-II } \\
\hline \text { 1. Hairy leaves } & \text { A. Resistance to jassids in cotton } \\
\text { 2. Solid stem } & \text { B. Resistance to Cereal leaf beetle in wheat } \\
\text { 3. Smooth leaf and less nectar } & \text { C. Resistance to Stem sawfly in wheat } \\
& \text { D. Resistance to Bollworm in cotton } \\
\hline
\end{array}
$$
(a) $1-\mathrm{A}, 2-\mathrm{B}$ and $\mathrm{C}, 3-\mathrm{D}$
(b) $1-\mathrm{A}$ and $\mathrm{B}, 2-\mathrm{C}, 3-\mathrm{D}$
(c) $1-\mathrm{D}, 2-\mathrm{C}, 3-\mathrm{A}$ and $\mathrm{B}$
(d) $1-\mathrm{A}$ and $\mathrm{C}, 2-\mathrm{B}, 3-\mathrm{C}$

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Problem 51

How many of the given names are various types of Brassica? Pusa komal, Pusa sem 2, Pusasem 3, Pusa gaurav, Pusa swarnim, Pusa sawami, Pusa shubhra
(a) 1
(b) 2
(c) 3
(d) 4

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Problem 52

Fill in the blanks.
$$
\begin{array}{lll}
\hline \begin{array}{l}
\text { Column-I } \\
\text { Crop }
\end{array} & \begin{array}{l}
\text { Column-II } \\
\text { Variety }
\end{array} & \begin{array}{l}
\text { Column-III } \\
\text { Insect Pests }
\end{array} \\
\hline \begin{array}{l}
\text { Brassica } \\
\text { (rapeseed mustard) }
\end{array} & \text { A } & \text { Aphids } \\
\text { Flat bean } & \begin{array}{l}
\text { Pusa sem 2, } \\
\text { Pusa sem 3 }
\end{array} & \text { B, Aphids and fruit borer } \\
\text { D } & \begin{array}{l}
\text { Pusa sawani } \\
\text { Pusa A-4 }
\end{array} & \text { C } \\
\hline
\end{array}
$$
(a) A-Pusa swarnim, B-Shoot borer, C-Jassids, D-Okra
(b) A-Pusa gaurav, B-Jassids, C-Shoot and fruit borer, D-Okra
(c) A-Okra, $\begin{array}{lll}\text { B-Jassids, } & \text { C-Fruit borer, } & \text { D-Pusa komal }\end{array}$
(d) A-Himgiri, B-Jassids, $\quad$ C-Shoot and fruit borer, D-Okra

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Problem 53

The source of pest resistance gene may be
(a) Cultivated varieties
(b) Germplasm collection of the crop
(c) Wild relatives
(d) All of these

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Problem 54

Which brassica variety is resistant to white rust?
(a) Pusa sawani
(b) Pusa komal
(c) Pusa swarnim
(d) Pusa sadabahar

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Problem 55

Which of the following pair are varieties of okra (A. esculentus)?
(a) Pusa sem 2 and Pusa sem 3
(b) Pusa shubhra and Pusa snowball $\mathrm{K}-\mathrm{I}$
(c) Pusa sawani and Pusa A-4
(d) Pusa swarnim and Pusa gaurav

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Problem 56

Which of the following pair are varieties of cauliflower?
(a) Pusa sem 2 and Pusa sem 3
(b) Pusa shubhra and Pusa snowball $\mathrm{K}-\mathrm{I}$
(c) Pusa sawani and Pusa $\mathrm{A}-4$
(d) Pusa swarnim and Pusa gaurav

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Problem 57

Match the Column-I (Causative agent) with Column-II (Disease).

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Problem 58

The sequential steps for breeding are
(A) Screening germplasm for resistance sources
(B) Selection and evaluation of hybrid
(C) Hybridization of selected parents
(D) Testing and release of new varieties
(a) D, C, B, A
(b) A, B, C, D
(c) A, C, B, D
(d) A, C, D, B

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Problem 59

Breeding for improved nutritional quality is undertaken with the objective of improving all of these except
(a) Protein content and quality
(b) Oil content and quality
(c) Vitamin micronutrient and mineral content
(d) Senescence of plant

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Problem 60

In 2000 a new maize hybrid was developed, which was rich in the following amino acids?
(a) Lysine and glycine
(b) Tryptophan and glutamic acid
(c) Lysine and tryptophan
(d) Glycine and glutamic acid

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Problem 61

From the following, how many are varieties of wheat? Atlas 66, Himgiri, Sonalika, Kalyan sona, Jaya, Ratna
(a) 3
(b) 2
(c) 4
(d) 5

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Problem 62

Iron fortified rice variety is _________ times richer in iron than the commonly used varieties.
(a) 2
(b) 3
(c) 4
(d) 5

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Problem 63

Wheat variety Atlas 66 is rich in
(a) Lipid content
(b) Water content
(c) Protein content
(d) Mineral content

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Problem 64

IARI, New Delhi released several vegetable crops that are rich in vitamins and minerals. With respect to that select the correct match.
$$
\begin{array}{ll}
\hline \text { Column-I } & \text { Column-II } \\
\hline \text { 1. Vitamin A } & \text { A. Correct, spinach, pumpkin } \\
\text { 2. Vitamin C } & \text { B. Bitter gourd, bathua, mustard, tomato } \\
\text { 3. Fe and Ca } & \text { C. Spinach and bathua } \\
\text { 4. Protein } & \text { D. road bean, lablab, French and garden peas } \\
\hline
\end{array}
$$
(a) A-2, B-3, C-1, D-4
(b) $\mathrm{A}-1, \mathrm{~B}-2, \mathrm{C}-3, \mathrm{D}-4$
(c) A-4, B-1, C-2, D-3
(d) A-3, B-4, C-1, D-2

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Problem 65

Diet deficiency in essential micro nutrients like Iron, Vitamin A, iodine and Zinc is responsible for
(a) Increased risk of disease
(b) Reduced life span
(c) Reduced mental abilities
(d) All of these

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Problem 66

Select the wrong combination.
(a) SCP-Single Cell Protein
(b) IRRI-International Rice Research Institute
(c) MOET-Multiple Ovulation Embryo Transfer Technology
(d) IARI-Indian Agro Revolution Institute

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Problem 67

_________ kg of grains produces _________ kg of meat by animal farming.
(a) $3-10,2$
(b) $3-10,10$
(c) $3-10,1$
(d) $3-10,5$

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Problem 68

What percentage of human population is suffering from hunger?
(a) $>25 \%$
(b) $>70 \%$
(c) $>80 \%$
(d) $>90 \%$

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Problem 69

Which has high rate of biomass production?
(a) Cow
(b) Buffalo
(c) Methylophilus methylotrophus
(d) Pavo cristatus

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Problem 70

Spirulina can be grown easily on
(a) Waste water from potato processing plant
(b) Straw and molasses
(c) Animal manure and sewage
(d) All of these

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Problem 71

_________ of a microorganism like Methylophilus methylotrophus, because of its high rate of biomass production and growth, can be expected to produce _________ of protein.
(a) $250 \mathrm{gm}, 25$ tonnes
(b) $50 \mathrm{gm}, 25$ tonnes
(c) $20 \mathrm{gm}, 25 \mathrm{~kg}$
(d) $25 \mathrm{gm}, 250 \mathrm{gm}$

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Problem 72

Which of the following organism can be used as food
(a) Mushroom
(b) Spirulina
(c) Chlorella
(d) All of these

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Problem 73

One of the alternate sources of proteins for animal and human nutrition is
(a) ROP
(b) $\mathrm{SCP}$
(c) GIP
(d) $\mathrm{BCG}$

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Problem 74

The shift from grain to meat diet creates more demand for cereals as it takes _________ kg of grain to produce _________ kg of meat by animal farming.
(a) 1,1
(b) 2,2
(c) $3-10,1$
(d) $1,3-10$

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Problem 75

In tissue culture, any part of a plant is taken out and grown in a test tube under sterile conditions in a special nutrient medium to regenerate whole plant. The part of plant used for this purpose is known as
(a) Somaclone
(b) Embryo
(c) Explant
(d) Zygote

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Problem 76

The capacity to regenerate whole plant from plant cell or explant is known as
(a) Totipotency
(b) Pluripotency
(c) Metaplasia
(d) Atrophy

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Problem 77

The method of producing thousands of plants through tissue culture is called
(a) Explant
(b) Totipotency
(c) Somaclone
(d) Micro-propagation

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Problem 78

Which of the following plants have been produced by tissue culture method on commercial scale?
(a) Tomato
(b) Banana
(c) Apple
(d) All of these

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Problem 79

The scientists have succeeded in culturing meristems of which of the following plants?
(a) Banana
(b) Sugarcane
(c) Potato
(d) All of these

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Problem 80

The part of virus infected plant used for tissue culture, free from viruses is
(a) Flower
(b) Leaf
(c) Apical meristem
(d) All of these

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Problem 81

Protoplast from two different varieties of plants, each having a desirable character, can be fused by a process known as
(a) Somatic hybridization
(b) Monohybrid cross
(c) Tissue culture
(d) Embryo culture

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Problem 82

Tomato and potato protoplast is fused to form
(a) Topoto
(b) Pomato
(c) Totato
(d) Tomapo

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Problem 83

Find out the incorrect statement.
(a) Virus free plant can be obtained by meristem culture.
(b) In micro-propagation soma clones are produced.
(c) Plant cell without cell wall is known as protoplast.
(d) Pomato (Somatic hybrid) has all the desired combinations of characteristics for its commercial utilization.

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Problem 84

In tissue culture, the nutrient medium should contain
(a) Carbon source, eg., Sucrose
(b) Inorganic salt, vitamin and amino acid
(c) Growth regulators like auxins and cytokinins
(d) All the above

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Problem 85

Find out the total number of marine fishes from the following. Hilsa, Sardines, Mackerel, Pomfrets, Catla, Rohu, Common carp
(a) 4
(b) 5
(c) 6
(d) 7

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Problem 86

Which of the following are types of outbreeding?
(a) Out-crossing
(b) Cross breeding
(c) Interspecific hybridization
(d) All of these

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Problem 87

Match the columns.
$$\begin{array}{ll}
\hline {\text { Column-I }} & {\text { Column-II }} \\
\hline \text { A. White revolution } & \text { 1. Increase in milk production } \\
\text { B. Green revolution } & \text { 2. Increase in crop production } \\
\text { C. Blue revolution } & \text { 3. Increase in fish production }
\end{array}$$
(a) $\mathrm{A}-1, \mathrm{~B}-2, \mathrm{C}-3$
(b) A-2, B-3, C-1
(c) A-3, B-2, C-1
(d) $\mathrm{A}-1, \mathrm{~B}-3, \mathrm{C}-2$

Hast Aggarwal

Numerade Educator

Problem 88

Aquaculture means
(a) Production of aquatic animals
(b) Production of aquatic plant
(c) Both (a) and (b)
(d) None of these

Hast Aggarwal

Numerade Educator

Problem 89

Interspecific hybridization means
(a) Mating of animals within the same breed.
(b) Superior male of one breed mated with superior female of another breed.
(c) Male and female animals of two different related species are mated.
(d) All the above

Hast Aggarwal

Numerade Educator

Problem 90

Which of the following statements are true?
(a) Bee wax is a by-product of honey
(b) Honeybees are potent pollinators
(c) Honey is a food of high nutritional value
(d) All the above

Hast Aggarwal

Numerade Educator

Problem 91

Which of the following is a variety of rice?
(a) Atlas-66
(b) Himgiri
(c) Sonalika
(d) Ratna

Hast Aggarwal

Numerade Educator

Problem 92

Which of the following diseases is caused by bacteria?
(a) Red rot of sugarcane
(b) Powdery mildew
(c) Black rot of crucifer
(d) Late blight of potato

Hast Aggarwal

Numerade Educator

Problem 93

In biofortification the objective is to improve the quality as well as content of
(a) Micronutrient
(b) Vitamin
(c) Oil
(d) All of these

Hast Aggarwal

Numerade Educator

Problem 94

Objectives of animal breeding are
(a) Increasing the quantity of yield
(b) Improving the quality of the product
(c) Resistance to various diseases
(d) All of these

Hast Aggarwal

Numerade Educator

Problem 95

The father of Green Revolution is
(a) Norman E. Borlaug
(b) Panchanan Maheshwari
(c) Dr Verghese Kurien
(d) M. S. Swaminathan

Hast Aggarwal

Numerade Educator

Problem 96

Which of the following are the advantages of SCP?
(a) Rich in high quality protein and poor in fat content.
(b) Production is based on industrial effluents so it helps to minimize the environmental pollution.
(c) It can be produced in laboratories throughout the year.
(d) All the above

Hast Aggarwal

Numerade Educator

Problem 97

Disease resistance in plants can be induced by
(a) Mutation
(b) Proper manuring
(c) Breeding with wild relatives
(d) Early sowing

Hast Aggarwal

Numerade Educator

Problem 98

Variations in plants produced by tissue culture is known as
(a) Androgenic variation
(b) Somaclonal variation
(c) Cybridization
(d) Induced variation

Hast Aggarwal

Numerade Educator

Problem 99

Green revolution has been possible due to the development of high yielding variety of
(a) Wheat and rice
(b) Apples and pears
(c) Jowar and bajra
(d) Sugarcane and grams

Hast Aggarwal

Numerade Educator

Problem 100

Somatic hybridization is a technique of
(a) Natural breeding
(b) Natural pollination
(c) Artificial pollination
(d) Somatic cell hybridization

Hast Aggarwal

Numerade Educator

Problem 101

Somaclonal variations appear in plants
(a) Growing in polluted soil or water
(b) Exposed to gamma rays
(c) Raised in tissue culture
(d) Transformed by recombinant DNA technology

Hast Aggarwal

Numerade Educator

Problem 102

In crop improvement programme, virus free clones can be obtained through
(a) Embryo culture
(b) Shoot apex culture
(c) Grafting
(d) Hybridization

Hast Aggarwal

Numerade Educator

Problem 103

Pollen grains of a plant, where $2 \mathrm{n}=28$ are cultured to get callus by tissue culture method. What would be the number of chromosomes in the cells of the callus?
(a) 14
(b) 56
(c) 28
(d) 21

Hast Aggarwal

Numerade Educator

Problem 104

By which of the following methods, new and better varieties of plants can be formed?
(a) Selection
(b) Grafting
(c) Hybridization
(d) Hybridization followed by selection

Hast Aggarwal

Numerade Educator

Problem 105

Read the assertion and reason carefully to mark the correct option out of the options given below:
(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.
(b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.
(c) If the assertion is true but the reason is false.
(d) If both the assertion and reason are false.
Assertion: Inbreeding increases heterozygosity.
Reason: Continuous inbreeding usually enhances fertility and even productivity.

Hast Aggarwal

Numerade Educator

Problem 106

Assertion: Mule is an examle of interspecific hybrid.
Reason: Mule produced by cross between male donkey and female horse.

Hast Aggarwal

Numerade Educator

Problem 107

Assertion: Mung beans are resistant to yellow mosaic virus.
Reason: Resistance is induced by mutation.

Hast Aggarwal

Numerade Educator

Problem 108

Assertion: Shoot-tip culture is used to raise virus-free clones.
Reason: Other explants can equally give rise to virus -free clones

Hast Aggarwal

Numerade Educator

Problem 109

Assertion: Somatic hybridization is the fusion of potoplast of two different varieties of plants.
Reason: Somatic hybridization is a type of sexual reproduction.

Hast Aggarwal

Numerade Educator

Problem 110

Assertion: Hissardale is a new breed of sheep.
Reason: Developed by crossing between Merino ewes and Bikaneri rams.

Hast Aggarwal

Numerade Educator

Problem 111

Assertion: Multiplication of plants in in vitro condition from the explants is called micropropagation.
Reason: Micropropagation occurs either in the form of multiple shoot formation or somatic embryos.

Hast Aggarwal

Numerade Educator

Problem 112

Assertion: Hairy leaves in several plants are associated with resistance to insect pests.
Reason: Nectar less cotton varieties do not attract bollworms.

Hast Aggarwal

Numerade Educator

Problem 113

Assertion: Beeswax is an animal product produced by honeybee.
Reason: Honey contains only sugar, nothing else.

Hast Aggarwal

Numerade Educator

Problem 114

Assertion: Cattle breeds can be improved by superovulaton and embryo transplantation.
Reason: Superovulation in high milk-yielding cows is induced by hormonal injection

Hast Aggarwal

Numerade Educator

Problem 115

Assertion: Pomato is not available commercially.
Reason: Pomato did not have all the desired combination of characteristics for its commercial utilization.

Hast Aggarwal

Numerade Educator

Problem 116

Assertion: Atlas 66 is used as a donor for improving cultivated wheat.
Reason: Atlas 66 is protein rich wheat variety.

Hast Aggarwal

Numerade Educator

Problem 117

Assertion: Some maize varieties are resistant to maize stem borer.
Reason: They contain high aspartic acid, low nitrogen and low sugar content.

Hast Aggarwal

Numerade Educator

Problem 118

Assertion: Some cotton varieties do not attract bollworms.
Reason: These cotton varieties are nectar less and posses smooth leaves.

Hast Aggarwal

Numerade Educator

Problem 119

Assertion: Wild relatives of several plants are useful to us.
Reason: Wild relative posses certain resistant characters which are useful in plant breeding.

Hast Aggarwal

Numerade Educator

Problem 120

Assertion: Fishery is an industry devoted to the catching, processing or selling of fish, shellfish or other aquatic animals
Reason: A large number of our population is depend on fish and fish product and some other aquatic animals

Hast Aggarwal

Numerade Educator

Problem 121

Assertion: Artificial insemination is technique used in controlled breeding experiment.
Reason: Artificial insemination helps us to overcome several problems of normal mating.

Hast Aggarwal

Numerade Educator

Problem 122

Assertion: In MOET cow is administered with hormone with FSH like activity.
Reason: It causes super ovulation in administered cow.

Hast Aggarwal

Numerade Educator

Problem 123

Assertion: Poultry is useful to us.
Reason: Poultry is the class of domesticated fowl used for food or for their eggs.

Hast Aggarwal

Numerade Educator