Objective Biology for NEET

Rajiv Vijay

Chapter 7

Evolution - all with Video Answers

Educators

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Chapter Questions

Problem 1

Evolutionary biology is related to the
(a) Origin of universe
(b) Origin of earth
(c) Study of history of life forms on earth
(d) Origin of stars

Anas Venkitta

Anas Venkitta

Numerade Educator

Problem 2

Stcllar distances are measured in
(a) $\mathrm{km}$
(b) $\mathrm{m}$
(c) Light year
(d) $\mathrm{pm}$

Anas Venkitta

Numerade Educator

Problem 3

How old is the universe?
(a) 10 billion years
(b) 20 billion years
(c) 5 billion years
(d) 15 billion years

Anas Venkitta

Numerade Educator

Problem 4

Galaxies contain
(a) Stars
(b) Clouds of gas and dust
(c) Both
(d) None of these

Anas Venkitta

Numerade Educator

Problem 5

Select the false statement from the following.
(a) Big bang theory is used to explain the origin of the universe.
(b) Expansion of the universe after the explosion lead to a decrease in temperature.
(c) Hydrogen and helium had formed before the explosion.
(d) Gases condensed under gravitation and formed galaxies.

Asma Venkitta

Numerade Educator

Problem 6

Earth was formed
(a) $4.5$
(b) $5.5$
(c) $3.5$
(d) $1.5$

Anas Venkitta

Numerade Educator

Problem 7

Molten mass on early earth produced
(a) Water vapour and $\mathrm{CH}_{4}$
(b) $\mathrm{CO}_{2}$
(c) $\mathrm{NH}_{3}$
(d) All of these

Anas Venkitta

Numerade Educator

Problem 8

Which part of solar radiation can break $\mathrm{H}_{2} \mathrm{O} ?$
(a) Visible radiation
(b) Ultraviolet radiation
(c) Infrared
(d) None of these

Anas Venkitta

Numerade Educator

Problem 9

Life appeared years after the formation of earth.
(a) 1000 million
(b) 100 million
(c) 10 million
(d) 500 million

Anas Venkitta

Numerade Educator

Problem 10

Which of the following is related to the origin of life on earth?
(a) Panspermia
(b) Theory of spontaneous generation
(c) Chemical evolution
(d) All of these

Anas Venkitta

Numerade Educator

Problem 11

Who proposed the theory of chemical evolution for the first time?
(a) Oparin and Haldane
(b) Miller
(c) Louis Pasteur
(d) Darwin

Anas Venkitta

Numerade Educator

Problem 12

Identify the parts $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ in the figure.
(a) A: Liquid water in trap, B: Electrode, C: Boiling water, D: Condenser
(b) A: Boiling water, B: Condenser, C: Electrode, D: Liquid water in trap
(c) A: Electrode, B: Condenser, C: Liquid water in trap, D: Boiling water
(d) A: Condenser, B: Liquid water in trap, C: Boiling water, D: Electrode

Hunza Gilgit

Numerade Educator

Problem 14

The first non-cellular form of life could have originated billion years back.
(a) 1
(b) 2
(c) 3
(d) 4

Anas Venkitta

Numerade Educator

Problem 15

Which of the given statement is wrong as per the 'Theory of Special Creation'?
(a) All living organism created as such
(b) Diversity change as time changes
(c) Earth is about 4000 years old
(d) All are correct

Anas Venkitta

Numerade Educator

Problem 16

The fitness referred to in Darwin's theory is
(a) Physical fitness
(b) Mental fitness
(c) Reproductive fitness
(d) All of these

Anas Venkitta

Numerade Educator

Problem 17

Evidence of evolution from fossils is known as
(a) Paleontological evidence
(b) Embryological evidence
(c) Physiological evidence
(d) Biochemical evidence

Anas Venkitta

Numerade Educator

Problem 18

Find out the correct statement from the following.
(A) According to Darwin, there is a gradual evolution of life forms.
(B) Darwin travelled around the world in a sail ship named H.M.S. Beagle.
(C) Alfred Wallace worked in Malay Archipelago.
(D) Fossils are remains of life forms which have become hard and turned into rock.
(a) $\mathrm{A}$ and $\mathrm{B}$ only
(b) B only
(c) C only
(d) All are correct

Hunza Gilgit

Numerade Educator

Problem 19

Homologous organ represents
(a) Convergent evolution
(b) Divergent evolution
(c) Anthropogenic evolution
(d) Genetic drift

Anas Venkitta

Numerade Educator

Problem 20

Analogous organs represent
(a) Convergent evolution
(b) Divergent evolution
(c) Anthropogenic evolution
(d) Genetic drift

Anas Venkitta

Numerade Educator

Problem 21

Which of the following shows analogy?
(a) Eye of octopus and mammals
(b) Vertebrate hearts
(c) Thorn of Bougainvillea and tendril of Cucurbita
(d) Vertebrate brains

Hunza Gilgit

Numerade Educator

Problem 22

Which of the following shows convergent evolution?
(a) Mouse and Marsupial mouse
(b) Bobcat and Spotted cuscus
(c) Anteater and Marsupial mole
(d) Lemur and Tasmanian wolf

Anas Venkitta

Numerade Educator

Problem 23

Which of the following is an example of anthropogenic evolution?
(a) Selection of resistant varieties due to herbicides.
(b) Selection of resistant varieties due to pesticides.
(c) Industrial melanism
(d) All the above

Hunza Gilgit

Numerade Educator

Problem 24

Dryopithecus and Ramapithecus existed mya.
(a) 5
(b) 10
(c) 15
(d) 25

Anas Venkitta

Numerade Educator

Problem 25

Select the false statements.
(A) Dryopithecus was more Ape-like.
(B) Ramapithecus was more Man-like.
(C) Dryopithecus and Ramapithecus both were hairy and walked like gorillas and chimpanzees.
(D) Australopithecines lived in the East African grasslands probably $3-4$ mya.
(a) B only
(b) $\mathrm{B}$ and $\mathrm{C}$ only
(c) D only
(d) All are correct

Hunza Gilgit

Numerade Educator

Problem 26

Which statement is true about Australopithecines?
(a) They hunted with stone weapons.
(b) They ate fruit.
(c) Two million years ago they lived in the East African grasslands.
(d) All the above

Hunza Gilgit

Numerade Educator

Problem 28

Which is true about Homo erectus?
(a) Brain capacity is $900 \mathrm{cc}$ approx
(b) Ate meat
(c) Found in java and exist $1.5 \mathrm{mya}$
(d) All of these

Hunza Gilgit

Numerade Educator

Problem 29

What does this diagram show?
(a) Convergent evolution
(b) Divergent evolution
(c) Homologous organ
(d) Both (b) and (c)

Hunza Gilgit

Numerade Educator

Problem 30

All these facts are true about the Neanderthal man except
(a) Brain size is $1400 \mathrm{cc}$.
(b) Used hides to protect their bodies.
(c) Lived in cast and central Asia between $1,00,000-40,000$ years back.
(d) Their fossils were discovered in Java in 1891 .

Hunza Gilgit

Numerade Educator

Problem 31

All these facts are true about Homo sapiens except
(a) Arose $75,000-10,000$ years ago
(b) Arose in Africa
(c) Brain capacity is $1400 \mathrm{cc}$
(d) They developed into distinct races

Hunza Gilgit

Numerade Educator

Problem 32

Arrange the following in the order of their cvolution.
(a) Homo habilis $\rightarrow$ Ramapithecus $\rightarrow$ Homo erectus $\rightarrow$ Dryopithecus $\rightarrow$ Homo sapiens $\rightarrow$ Australopithecines $\rightarrow$ Neanderthal man
(b) Dryopithecus $\rightarrow$ Ramapithecus $\rightarrow$ Australopithecus $\rightarrow$ Homo habilis $\rightarrow$ Homo erectus $\rightarrow$ Neanderthal man $\rightarrow$ Homo sapiens
(c) Australopithecines $\rightarrow$ Homo sapiens $\rightarrow$ Ramapithecus $\rightarrow$ Dryopithecus $\rightarrow$ Homo habilis $\rightarrow$ Homo erectus $\rightarrow$ Neanderthal man
(d) Neanderthal man $\rightarrow$ Australopithecines $\rightarrow$ Homo sapiens $\rightarrow$ Homo erectus $\rightarrow$ Homo habilis $\rightarrow$ Ramapithecus $\rightarrow$ Dryopithecus

Hunza Gilgit

Numerade Educator

Problem 33

Match the columns.
$$
\begin{array}{ll}
\hline \text { Column-I } & \text { Column-II } \\
\hline \text { (A) Homo habilis } & \text { (1) } 650-800 \mathrm{cc} \\
\text { (B) Homo erectus } & \text { (2) } 900 \mathrm{cc} \\
\text { (C) Neanderthal man } & \text { (3) } 1400 \mathrm{cc}
\end{array}
$$
(a) $\mathrm{A}: 1, \mathrm{~B}: 2, \mathrm{C}: 3$
(b) $\mathrm{A}: 2, \mathrm{~B}: 1, \mathrm{C}: 3$
(c) A:2, B:3, C:1
(d) $\mathrm{A}: 3, \mathrm{~B}: 2, \mathrm{C}: 1$

Asma Venkitta

Numerade Educator

Problem 35

Who buried their dead?
(a) Java men
(b) Homo habilis
(c) Homo erectus
(d) Neanderthal man

Anas Venkitta

Numerade Educator

Problem 36

The first cellular form of life appeared
(a) 1000
(b) 2000
(c) 3000
(d) 4000

Anas Venkitta

Numerade Educator

Problem 37

Match the columns.
$$
\begin{array}{ll}
\hline \text { (A) Invertebrates } & \text { (1) } 500 \mathrm{mya} \\
\text { (B) Jawless fish } & \text { (2) } 320 \mathrm{mya} \\
\text { (C) Scaweeds } & \text { (3) } 350 \mathrm{mya} \\
\text { (D) Dryopithecus and Ramapithecus } & \text { (4) } 15 \mathrm{mya} \\
\hline
\end{array}
$$
(a) $\mathrm{A}: 2, \mathrm{~B}: 1, \mathrm{C}: 4, \mathrm{D}: 3$
(b) A: $1, \mathrm{~B}: 3, \mathrm{C}: 2, \mathrm{D}: 4$
(c) A:1, B:4, C:2, D:3
(d) $\mathrm{A}: 4, \mathrm{~B}: 3, \mathrm{C}: 1, \mathrm{D}: 2$

Asma Venkitta

Numerade Educator

Problem 38

The first organisms that invaded land were
(a) Animals
(b) Plants
(c) Amphibians
(d) Reptiles

Anas Venkitta

Numerade Educator

Problem 39

Which of the following is a lobe finned fish?
(a) Coelacanth
(b) Hippocampus
(c) Catla
(d) Pteropus

Anas Venkitta

Numerade Educator

Problem 40

Amphibians evolved from
(a) Synapsids
(b) Sauropside
(c) Lobed fin fishes
(d) Cycads

Anas Venkitta

Numerade Educator

Problem 41

Which of these is a direct ancestor of turtles?
(a) Sauropsids
(b) Synapsids
(c) Pelycosaurs
(d) Thecodonts

Anas Venkitta

Numerade Educator

Problem 42

Find out the total number of correct statements from the following.
(A) Pteridophytes forms coal deposits.
(B) Fishlike reptiles (Ichthyosaurs) evolved 200 million years ago.
(C) About 65 million years ago dinosaurs suddenly disappeared from earth.
(D) Tyrannosaurus rex was the biggest dinosaurs which is about 20 feet in height.
(E) Because of continental drift, pouched mammals of Australia survived as there was a lack of competition from any other mammals.
(a) 2
(b) 3
(c) 4
(d) 5

Hunza Gilgit

Numerade Educator

Problem 43

Which of these is/are aquatic mammals?
(a) Whale
(b) Dolphin
(c) Seals and Sea cows
(d) All of these

Anas Venkitta

Numerade Educator

Problem 44

Find the total number of organisms evolved from Psilophyton in the following. Bryophytes, Herbaceous lycopods, Sphenopsids, Ferns, Ginkgos, Conifers, Gnetales, Arborescent lycopods
(a) 2
(b) 3
(c) 5
(d) 6

Hunza Gilgit

Numerade Educator

Problem 45

All these are animals except
(a) Synapsids
(b) Therapsids
(c) Sphenopsids
(d) Sauropsids

Anas Venkitta

Numerade Educator

Problem 46

Seed fern evolved into
(a) Cycads
(b) Dicot
(c) Monocot
(d) All of these

Anas Venkitta

Numerade Educator

Problem 47

Which of the following were extinct in the Pcrmian period?
(a) Ferns
(b) Cycads
(c) Arborescent lycopodus
(d) Bryophytes

Anas Venkitta

Numerade Educator

Problem 48

Bryophytes evolved in which of these periods?
(a) Carboniferous
(b) Permian
(c) Triassic
(d) Cretaceous

Anas Venkitta

Numerade Educator

Problem 49

What does this diagram show?
(a) Brachiosaurus
(b) Stegosaurus
(c) Triceratops
(d) Tyrannosaurus

Anas Venkitta

Numerade Educator

Problem 50

How many of these periods belong to the paleozoic era? Cretaceous, Jurrasic, Triassic, Permian, Carboniferous, Devonian, Silurin
(a) 1
(b) 2
(c) 3
(d) 4

Hunza Gilgit

Numerade Educator

Problem 51

Synapsids existed
(a) $300 \mathrm{mya}$
(b) $150 \mathrm{mya}$
(c) $350 \mathrm{mya}$
(d) $50 \mathrm{mya}$

Anas Venkitta

Numerade Educator

Problem 52

Zosterophyllum belonged to which period?
(a) Silurian
(b) Devonian
(c) Carboniferous
(d) Permian

Anas Venkitta

Numerade Educator

Problem 53

Which of the following was/were the most abundant in cenozoic era?
(a) Angiosperm
(b) Cycads
(c) Conifers
(d) Ginkgos

Anas Venkitta

Numerade Educator

Problem 54

Which of these features belong/s to mammals?
(a) Viviparous, avoid danger
(b) More intelligent in sensing
(c) Both (a) and (b)
(d) None of these

Anas Venkitta

Numerade Educator

Problem 55

What can be said to be the success story of man in evolution?
(a) Language skills
(b) Self-consciousness
(c) Increased cranial capacity
(d) All of these

Anas Venkitta

Numerade Educator

Problem 56

Conifers were most abundant in
(a) Palcozoic era
(b) Mesozoic era
(c) Cenozoic era
(d) All eras

Anas Venkitta

Numerade Educator

Problem 58

This diagram shows:
(a) Adaptive radiation
(b) Genetic drift
(c) Founder effect
(d) Mutation

Hunza Gilgit

Numerade Educator

Problem 59

Arrange the ascending order of extinction (reptiles):
(a) Pelycosaurs, Thecodonts, Therapsids, Dinosaurs
(b) Thecodonts, Dinosaurs, Pelycosaurs, Therapsids
(c) Dinosaurs, Therapsids, Thecodonts, Pelycosaurs
(d) Therapsids, Thecodonts, Pelycosaurs, Dinosaurs

Hunza Gilgit

Numerade Educator

Problem 60

When a given population is in genetic equilibrium, then
(a) Gene pool remains constant.
(b) Allele frequencies in population is constant from generation to generation.
(c) Sum total of all allelic frequencies is $1 .$
(d) All the above

Hunza Gilgit

Numerade Educator

Problem 61

How many factors affect the Hardy-Weinberg equilibrium?
(a) 1
(b) 3
(c) 4
(d) 5

Anas Venkitta

Numerade Educator

Problem 62

The factors affecting genetic equilibrium are the following except
(a) Gene flow
(b) Mutation
(c) Somatic variation
(d) Genetic recombination

Hunza Gilgit

Numerade Educator

Problem 63

The five factors affecting genetic equilibrium are
(a) Gene flow, genetic drift
(b) Mutation, genetic recombination
(c) Natural selection
(d) All of these

Anas Venkitta

Numerade Educator

Problem 64

Natural selection is which of the following types?
(a) Stabilizing
(b) Disruptive
(c) Directional
(d) Any of these

Anas Venkitta

Numerade Educator

Problem 65

Variation may be due to
(a) Mutation
(b) Genetic recombinant during gametogenesis
(c) Gene flow or genetic drift
(d) All the above

Asma Venkitta

Numerade Educator

Problem 66

Hugo de Vries, based on his work on brought forth the idea of mutations.
(a) Pisum sativum
(b) Lathyrus odoratus
(c) Evening primrose
(d) Lathyrus sativus

Anas Venkitta

Numerade Educator

Problem 67

Mutations are
(a) Directionless and random
(b) Random and directional
(c) Small variations and directional
(d) Not responsible for evolution

Anas Venkitta

Numerade Educator

Problem 68

Select the false statement from the following.
(a) Darwinian variations are small and dircctional.
(b) Saltation is a single large step mutation.
(c) Branching descent and natural selection are the two key concepts of Darwinian theory of cvolution.
(d) Mutation is random and progressive in naturc.

Hunza Gilgit

Numerade Educator

Problem 69

Which of the following diagrams is not a correct representation of convergent evolution?
(a)
(b)
(c)
(d)

Hunza Gilgit

Numerade Educator

Problem 70

Abiogenesis means
(a) Spontaneous generation
(b) Origin of viruses and microbes
(c) Origin of life from living organisms
(d) Origin of life from nonliving organisms

Asma Venkitta

Numerade Educator

Problem 71

Pasteur's experiments and similar ones that followed convinced most of the people that spontaneous generation of life did not happen because
(a) Pasteur was extremely meticulous.
(b) Pasteur did not boil his flask for a long time.
(c) Pasteur used very fine mesh screens to cover his flask.
(d) Pasteur's swan-necked flasks ruled out the objection that spoiled air could have contaminated his experiments.

Hunza Gilgit

Numerade Educator

Problem 72

The early belief of the spontaneous origin of life was disproved by
(a) Lederberg
(b) Robert Koch
(c) Louis Pasteur
(d) Charles Darwin

Anas Venkitta

Numerade Educator

Problem 74

The idea that life originates from pre-cxisting life is referred to as
(a) Biogenesis theory
(b) Abiogenesis theory
(c) Extraterrestrial theory
(d) Special creation theory

Anas Venkitta

Numerade Educator

Problem 75

Lifc was created by some supernatural power. This theory is
(a) Abiogencsis
(b) Spore theory
(c) Special creation theory
(d) Spontaneous generation

Anas Venkitta

Numerade Educator

Problem 76

Life came from outer space, this theory is called
(a) Spore theory
(b) Naturalistic theory
(c) Special creation theory
(d) Spontaneous generation

Anas Venkitta

Numerade Educator

Problem 77

About how long ago was the Earth formed?
(a) $3.0$ billion years ago
(b) 10 billion years ago
(c) $4.6$ billion years ago
(d) 20 billion years ago

Anas Venkitta

Numerade Educator

Problem 78

Modern theory of origin of life' was propounded by
(a) Oparin
(b) Miller
(c) Darwin
(c) Khorana

Anas Venkitta

Numerade Educator

Problem 79

A. I. Oparin was a
(a) Polish biologist
(b) Russian biochemist
(c) Belgian nutritionist
(d) Swedish cosmologist

Anas Venkitta

Numerade Educator

Problem 80

Oparin's theory of 'Origin of life' is based on
(a) Chemical evolution
(b) Cosmic evolution
(c) Artificial synthesis
(d) Organic evolution

Anas Venkitta

Numerade Educator

Problem 81

According to Oparin, which one of the following was not present in the primitive atmosphere of the Earth?
(a) Oxygen
(b) Methane
(c) Hydrogen
(d) Water vapour

Anas Venkitta

Numerade Educator

Problem 82

The basic components of atmosphere of primitive Earth were
(a) Ammonia, methane and water
(b) Methane, ozone, nitrogen and water
(c) Hydrogen, nitrogen, methane and water
(d) Ammonia, methane, hydrogen and water

Hunza Gilgit

Numerade Educator

Problem 83

Which of the following is a true statement?
(a) The primitive atmosphere had 20 per cent oxygen, just like it is today.
(b) The reducing primitive atmosphere contributed to the origin of life and the oxidizing one today would hinder it.
(c) The primitive atmosphere was an oxidizing one and today's is a reducing one, making photosynthesis possible.
(d) It took so long for prokaryote evolution because the primitive atmosphere screened out the ultraviolet radiation from the sun.

Hunza Gilgit

Numerade Educator

Problem 84

Life originated in
(a) Air
(b) Water
(c) Land
(d) All of these

Aflah M

Numerade Educator

Problem 85

Stanley Miller proposed the origin of life by
(a) Biogenesis
(b) Abiogenesis
(c) Chemical synthesis
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 86

The first experiment on chemical evolution and origin of life was carried out by
(a) Watson and Crick
(b) Miller and Urey
(c) Bcadlc and Tatum
(d) Darwin and Wallace

Hunza Gilgit

Numerade Educator

Problem 87

The spark-discharge apparatus to test chemical cvolution of lifc was designed by
(a) Urey and Miller
(b) Dixon and Jolly
(c) Jacob and Monod
(d) Oparin and Haldanc

Hunza Gilgit

Numerade Educator

Problem 88

The diagram represents Miller's experiment. Choose the correct combination of labelling:
(a) A: Electrodes, B: $\mathrm{NH}_{3}+\mathrm{H}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CH}_{4}$, C: Hot water, D: Vacuum, E: U trap
(b) A: Electrodes, B: $\mathrm{NH}_{3}+\mathrm{H}_{2} \mathrm{O}, \mathrm{C}:$ Hot water, D: Tap, E: U trap
(c) A: Electrodes, B: $\mathrm{NH}_{3}+\mathrm{H}_{2}+\mathrm{H}_{2} \mathrm{O}, \mathrm{CH}_{4}$, C: Cold water, D: Vacuum, E: U trap
(d) A: Electrodes, B: $\mathrm{NH}_{3}+\mathrm{H}_{2}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CH}_{4}$, C: Steam, D: Vacuum, E: U Trap
(e) A: Electrodes, B: $\mathrm{NH}_{3}+\mathrm{CH}_{4}$, C: Cold water, D: Sink, E: U trap

Hunza Gilgit

Numerade Educator

Problem 89

The findings of Miller's experiment on origin of life have provided evidence for
(a) Theory of biogenesis
(b) Oparin-Haldane theory
(c) Theory of special creation
(d) Theory of organic evolution

Hunza Gilgit

Numerade Educator

Problem 90

The category of molecules produced by the Miller-Urey experiment was
(a) Organic polymers
(b) Inorganic polymers
(c) Organic monomers
(d) Inorganic monomers

Hunza Gilgit

Numerade Educator

Problem 91

Stanley Miller who is famous for 'simulation experiments' belonged to
(a) USA
(b) UK
(c) USSR
(d) Canada

Hunza Gilgit

Numerade Educator

Problem 92

Stanley Miller conducted his experiments and produced amino acids by electric discharge passed through $\mathrm{NH}_{3}, \mathrm{H}_{2} \mathrm{O}, \mathrm{CH}_{4}$ and
(a) Oxygen
(b) Hydrogen
(c) Nitrogen
(d) Carbon dioxide

Hunza Gilgit

Numerade Educator

Problem 93

This diagram shows
(a) Convergent evolution
(b) Divergent evolution
(c) Homologus organ
(d) Both (b) and (c)

Hunza Gilgit

Numerade Educator

Problem 94

The energy used in the Miller-Urey experiment was
(a) Photo energy
(b) Electric spark
(c) Atomic radiation
(d) Mechanical energy

Hunza Gilgit

Numerade Educator

Problem 95

Earliest life forms on the earth were
(a) Autotrophs
(b) Cyanobacteria
(c) Photoautotrophs
(d) Chemoheterotrophs

Tate Hilken

Numerade Educator

Problem 96

The concept of chemical evolution is based on
(a) Crystallization of chemicals.
(b) Effect of solar radiation on chemicals.
(c) Interaction of water, air and clay under intense heat.
(d) Possible origin of life by combination of chemicals under suitable environmental conditions.

Hunza Gilgit

Numerade Educator

Problem 97

Which one of the following is incorrect about the characteristic of protobionts (coacervates and microspheres) as envisaged in abiogenic origin of life?
(a) They were able to reproduce.
(b) They could maintain an internal environment.
(c) They were partially isolated from the surroundings.
(d) They could separate the combination of molecule from the surroundings.

Hunza Gilgit

Numerade Educator

Problem 98

Biologists define evolution as
(a) Heritable change in a line of descent over generations
(b) Inheritance of characteristics acquired by the individual
(c) The origin of species
(d) None of the above

Hunza Gilgit

Numerade Educator

Problem 99

Which of the following diagram does not correctly represent the convergent evolution?
(a)
(b)
(c)
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 100

Basic idea of evolution is
(a) Cosmic evolution
(b) Special creation
(c) Spontaneous generation
(d) Descent with modification

Hunza Gilgit

Numerade Educator

Problem 101

The process of evolution is
(a) Continuous
(b) Discontinuous
(c) Continuous in the past but discontinuous presently
(d) Discontinuous in the past but continuous presently

Sharon Edamala

Numerade Educator

Problem 102

The concept of evolution is an excellent working hypothesis to approach the problem of
(a) Matter, energy and life
(b) Environmental conditions
(c) Prodigality in reproduction
(d) Diversity of organisms upon earth

Hunza Gilgit

Numerade Educator

Problem 103

Darwin's finches provide excellent evidence in favour of evolution. This evidence comes from the field of
(a) Anatomy
(b) Biogeography
(c) Embryology
(d) Palaeontology

Hunza Gilgit

Numerade Educator

Problem 104

The evolution of numerous species, such as Darwin's finches from a single ancestor is called
(a) Gradualism
(b) Adaptive radiation
(c) Sympatric speciation
(d) Geographical isolation

Hunza Gilgit

Numerade Educator

Problem 105

Darwin's finches discovered from the Galapagos Islands serve as a good example of
(a) Mimicry
(b) Camouflage
(c) Seasonal migration
(d) Biogeographical evidence of evolution

Joanna Quigley

Numerade Educator

Problem 106

The classical example of adaptive radiation in development of new species is
(a) Darwin's finches
(b) Marsupials of Australia
(c) Both (a) and (b)
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 107

The organs of different species that are related to each other through common descent though becomes functionally different are called
(a) Vestigial
(b) Analogous
(c) Homologous
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 108

Organs which have the same fundamental structure but different in functions are called
(a) Vestigial organs
(b) Analogous organs
(c) Homoplastic organs
(d) Homologous organs

Hunza Gilgit

Numerade Educator

Problem 109

Homology does not refer to
(a) Divergent evolution
(b) Common descent
(c) Convergent evolution
(d) Adaptive radiation

Hunza Gilgit

Numerade Educator

Problem 110

The homologous organs are wings of
(a) Pigeon and bat
(b) Butterfly and bat
(c) Sparrow and honcybee
(d) Parrot and limbs of man

Hunza Gilgit

Numerade Educator

Problem 111

Which of the following are not homologous?
(a) Insect mouthparts
(b) Insect legs
(c) Vertebrate forelimbs
(d) Bird and insect wings

Hunza Gilgit

Numerade Educator

Problem 112

Which of the following is a set of homologous organs?
(a) Wings of grasshopper, flippers of whalc
(b) Wings of birds, front fect of horsc
(c) Wings of houscfly, wings of birds
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 113

Name the organism represented by $\mathrm{A}$ to $\mathrm{F}$ in the illustration.
(a) A: Tigercat, B: Banded anteater, C: Marsupial rat, D: Wombat, E: Bandicoot, F: Koala
(b) A: Bandicoot, B: Wombat, C: Marsupial rat, D: Koala, E: Tigercat, F: Banded anteater
(c) A: Koala, B: Banded anteater, C: Tigercat, D: Bandicoot, E: Marsupial rat, E: Wombat
(d) A: Wombat, B: Tigercat, C: Koala, D: Bandicoot, E: Banded anteater, F: Marsupial rat

Hunza Gilgit

Numerade Educator

Problem 114

Which group includes homologous organs?
(a) Wings of butterfly, flying fish and bird
(b) Tentacles of hydra and arms of starfish
(c) Fins of seal, wings of birds and forelimbs of man
(d) Horns of cattle, tail of horse and teeth of mammals

Hunza Gilgit

Numerade Educator

Problem 115

Which of the following are homologous organs?
(a) Hand of man, wings of bat
(b) Eyes of man, eyes of squid
(c) Gills of fish, lungs of man
(d) Leaf of moss, frond of fern

Hunza Gilgit

Numerade Educator

Problem 116

Thorn of bougainvillea and tendril of cucurbita are examples of
(a) Vestigial organs
(b) Analogous organs
(c) Homologous organs
(d) Retrogressive evolution

Hunza Gilgit

Numerade Educator

Problem 117

Although all mammals whale, dolphin, bat, monkey and horse have some important common characters, but they also show conspicuous differences. This is due to the phenomenon of
(a) Divergence
(b) Genetic drift
(c) Convergence
(d) Normalization

Hunza Gilgit

Numerade Educator

Problem 118

Which of the following are homologous organs?
(a) Wings of insects and bats
(b) Fins of fishes and flippers of whale
(c) Fins of fishes and forearms of human
(d) Forearm of human, bat's wings and whale's flippers

Sirisa Reddy

Numerade Educator

Problem 119

Analogous structures are
(a) Similar in origin and function
(b) Different in origin and function
(c) Different in origin but similar in function
(d) Similar in origin but different in function

Hunza Gilgit

Numerade Educator

Problem 120

Analogy is found between
(a) Wings of birds and bats
(b) Wings of bat and butterfly
(c) Hands of man and flippers of whale
(d) Hands of man and forelimbs of horse

Hunza Gilgit

Numerade Educator

Problem 121

Which pair of organs are analogous in nature?
(a) Gills of fish and gills of prawn
(b) Ear of frog and ear of rabbit
(c) Arm of man and limbs of horse
(d) Wings of bat and flippers of seal

Hunza Gilgit

Numerade Educator

Problem 122

Which of the following pairs are correct?
(a) Bat wing and insect wing are analogous.
(b) Seal flippers and bat paw are homologous.
(c) Insect wing and bird wing are homologous.
(d) Thorn of bougainvillea and tendril of pea are analogous.

Hunza Gilgit

Numerade Educator

Problem 123

Which type of evolution is shown by the wings of bats, mosquitoes and pigeons?
(a) Divergent
(b) Atavism
(c) Convergent
(d) Vestigial organs

Hunza Gilgit

Numerade Educator

Problem 124

The most direct evidence of organic evolution is
(a) Fossils
(b) Embryos
(c) Morphology
(d) Vestigial organs

Hunza Gilgit

Numerade Educator

Problem 125

The study of fossils as evidence of evolution is called
(a) Anatomy
(b) Embryology
(c) Palaeontology
(d) Biogeography

Hunza Gilgit

Numerade Educator

Problem 126

The fossils are preserved in
(a) Sedimentary rocks
(b) Igneous rocks
(c) Metamorphic rocks
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 127

Fossil $X$ is older than fossil $Y$ because
(a) Fossil Y was found in decper sedimentation.
(b) Fossil $\mathrm{X}$ was found in decper sedimentation.
(c) Fossil $Y$ has some vestigial organs functional in $X$.
(d) Fossil Y has homologous and analogous organs of $X$.

Hunza Gilgit

Numerade Educator

Problem 128

Our best cstimate for the age of Earth, which is $4.5$ billion ycars is supported by
(a) Gradualism
(b) Big bang theory
(c) Assumption of uniformitarianism
(d) Radioactive dating of the oldest rocks found

Hunza Gilgit

Numerade Educator

Problem 129

Correct order is
(a) Palacozoic $\rightarrow$ Mesozoic $\rightarrow$ Cenozoic
(b) Mesozoic $\rightarrow$ Archaeozoic $\rightarrow$ Proterozoic
(c) Palaeozoic $\rightarrow$ Archaeozoic $\rightarrow$ Cenozoic
(d) Archaeozoic $\rightarrow$ Palaeozoic $\rightarrow$ Proterozoic

Hunza Gilgit

Numerade Educator

Problem 130

The largest subdivision in geological time scale is
(a) Era
(b) Period
(c) Epoch
(d) Century

Hunza Gilgit

Numerade Educator

Problem 131

Which of the following is called 'age of fish'?
(a) Silurian
(b) Permian
(c) Devonian
(d) Cretaceous

Hunza Gilgit

Numerade Educator

Problem 132

Carboniferous period of coal deposition was
(a) 50 million years ago
(b) 300 million years ago
(c) 500 million years ago
(d) 2000 million years ago

Anas Venkitta

Numerade Educator

Problem 133

What is $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ in the diagram?
(a) A: Conifers, B: Ginkgos, C: Ferns, D: Gnetales
(b) A: Ferns, B: Ginkgos, C: Conifers, D: Gnetales
(c) A: Gnetales, B: Conifers, C: Ginkgos, D: Ferns
(d) A: Ginkgos, B: Gnetales, C: Ferns, D: Conifers

Hunza Gilgit

Numerade Educator

Problem 134

Mesozoic era is the age of
(a) Birds
(b) Fishes
(c) Reptiles
(d) Mammals

Hunza Gilgit

Numerade Educator

Problem 135

Dinosaurs were the
(a) First mammals
(b) Extinct reptiles
(c) Giant mammals
(d) First amphibians

Hunza Gilgit

Numerade Educator

Problem 136

If you want to see a dinosaur, it would be the best to set the controls of your time machine for the
(a) Mesozoic era
(b) Precambrian era
(c) Palaeozoic era
(d) Pleistocene period

Hunza Gilgit

Numerade Educator

Problem 137

Dinosaurs became extinct during
(a) Jurassic
(b) Triassic
(c) Permian
(d) Cretaceous

Hunza Gilgit

Numerade Educator

Problem 138

Which era was dominated by reptiles?
(a) Mesozoic era
(b) Cenozoic era
(c) Palaeozoic era
(d) Archaeozoic era

Hunza Gilgit

Numerade Educator

Problem 139

The golden age of reptile was
(a) Mesozoic era
(b) Cenozoic era
(c) Palacozoic era
(d) Proterozoic era

Hunza Gilgit

Numerade Educator

Problem 140

The Jurassic period belongs to the era
(a) Cenozoic
(b) Mesozoic
(c) Palaeozoic
(d) Archaeozoic

Hunza Gilgit

Numerade Educator

Problem 141

Evolution of unique groups of mammals in South America, Africa and Australia is an evidence supporting
(a) Continental drift
(b) Glaciation
(c) Crustal movement
(d) Geographical juxtaposition

Joanna Quigley

Numerade Educator

Problem 142

Occurrence of endemic species in South America and Australia is due to
(a) Progressive evolution
(b) Continental separation
(c) Absence of terrestrial route to these places
(d) Extinction of these species in other regions

Rashmi Gondi

Numerade Educator

Problem 143

The first attempt to solve the problem of mechanism of organic evolution was made by
(a) Oparin
(b) Darwin
(c) Wallace
(d) Lamarck

Anas Venkitta

Numerade Educator

Problem 144

Lamarck was a
(a) French naturalist
(b) German biologist
(c) British evolutionist
(d) American biochemist

Aflah M

Numerade Educator

Problem 145

Lamarck's theory of evolution is called
(a) Inheritance of acquired characters
(b) Theory of special creation
(c) Survival of the fittest
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 146

The theory of use and disuse of organs was given by
(a) Lamarck
(b) Darwin
(c) Weissmann
(d) Hugo de Vries

Hunza Gilgit

Numerade Educator

Problem 147

The most important theory of evolution was proposed by
(a) Beadle and Tatum
(b) Watson and Crick
(c) Darwin and Wallace
(d) Mendel and Morgan

Hunza Gilgit

Numerade Educator

Problem 148

The concepts of natural selection in evolution were proposed by
(a) Hugo de Vries
(b) Charles Darwin
(c) August Weismann
(d) Jean Baptiste de Lamarck

Hunza Gilgit

Numerade Educator

Problem 149

Darwin travelled in which ship?
(a) H.N.S. Eagle
(b) Titanic
(c) H.M.S. Beagle
(d) D. Matrica

Hunza Gilgit

Numerade Educator

Problem 150

The main point of Darwin's theory is
(a) Variation
(b) Mutation
(c) Enormous fertility
(d) Natural selection

Hunza Gilgit

Numerade Educator

Problem 151

Survival of the fittest is possible due to
(a) Overproduction
(b) Favourable variations
(c) Environmental changes
(d) Inheritance of acquired characters

Hunza Gilgit

Numerade Educator

Problem 151

Survival of the fittest is possible due to
(a) Overproduction
(b) Favourable variations
(c) Environmental changes
(d) Inheritance of acquired characters

Hunza Gilgit

Numerade Educator

Problem 152

What is $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ in this figure?
(a) A: Therapsids, B: Thecodonts, C: Pelycosaurs, D: Dinosaurs
(b) A: Thecodonts, B: Dinosarus, C: Therapsids, D: Pelycosaurs
(c) A: Dinosaurs, B: Pelycosaurs, C: Thecodonts, D: Therapsids
(d) A: Pelycosaurs, B: Therapsids, C: Dinasours, D: Thecodonts

Mishal Gul

Numerade Educator

Problem 153

The theory of natural selection of Darwin
(a) Does not explain fossils
(b) Is completely changed
(c) Has the first theory of organic evolution
(d) Has failed in explaining the origin of variations

Hunza Gilgit

Numerade Educator

Problem 154

Darwin was influenced by reading the essays of
(a) Wallace
(b) Spencer
(c) Mendel
(d) Malthus

Hunza Gilgit

Numerade Educator

Problem 155

Which one provides the correct sequence of events in origin of species according to Darwinism?
(A) Natural selection
(B) Variations and their inheritance
(C) Survival of the fittest
(D) Struggle for existence
(a) $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$
(b) B, D, C, A
(c) D, B, C, A
(d) B, C, A, D

Hunza Gilgit

Numerade Educator

Problem 156

Which of the following is not under Darwin's theory of natural selection?
(a) Over production
(b) Survival of the fittest
(c) Causes of variation
(d) Struggle for existence

Hunza Gilgit

Numerade Educator

Problem 157

Which one of the following phenomena supports Darwin's concept of natural selection in organic cvolution?
(a) Development of transgenic animals.
(b) Prevalence of pesticide resistant insects.
(c) Production of 'Dolly' the shecp by cloning.
(d) Development of organs from 'stem cells' for organ transplantation.

Hunza Gilgit

Numerade Educator

Problem 158

The brecding of plants and animals by humans is termed as
(a) Natural selection
(b) Founder effect
(c) Neutral variation
(d) Artificial selection

Hunza Gilgit

Numerade Educator

Problem 159

Improved race of pigeons have been developed by
(a) Natural selection
(b) Artificial selection
(c) Protective selection
(d) Environmental selection

Hunza Gilgit

Numerade Educator

Problem 160

Most modern breeds of domestic dog have been evolved through
(a) Isolation
(b) Sexual selection
(c) Artificial selection
(d) Natural selection

Hunza Gilgit

Numerade Educator

Problem 161

Mutation theory explaining organic evolution was proposed by
(a) E. Darwin
(b) W. Harvey
(c) Hugo de Vries
(d) Louis Pasteur

Hunza Gilgit

Numerade Educator

Problem 162

The material in which Hugo de Vries experimented to explain the mechanism of evolution thus pioneering the theory of mutations was
(a) Fruitfly
(b) China rose
(c) Garden pea
(d) Evening primrose

Hunza Gilgit

Numerade Educator

Problem 163

Hugo de Vries gave his mutation theory on organic evolution while working on
(a) Althea rosea
(b) Pisum sativum
(c) Oenothera lamarckiana
(d) Drosophila melanogaster

Sirisa Reddy

Numerade Educator

Problem 164

For natural selection the important factor is
(a) Disuse
(b) Variation
(c) Catastrophe
(d) Special creation

Hunza Gilgit

Numerade Educator

Problem 165

In which condition does the gene ratio remain constant for any species?
(a) Mutation
(b) Gene flow
(c) Sexual selection
(d) Random mating

Hunza Gilgit

Numerade Educator

Problem 166

Initiating the force of evolution is
(a) Variation
(b) Adaptation
(c) Competition
(d) Natural selection

Hunza Gilgit

Numerade Educator

Problem 167

The raw material for organic evolution is
(a) Asexual reproduction
(b) Mutation
(c) Nutritive substances
(d) Effect of hormones

Hunza Gilgit

Numerade Educator

Problem 168

Lederberg replica experiment explains
(a) Mutation theory
(b) Darwin's theory
(c) Lamarck's theory
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 169

Some bacteria are able to grow in streptomycin containing medium due to
(a) Genetic drift
(b) Natural selection
(c) Induced mutation
(d) Reproductive isolation

Hunza Gilgit

Numerade Educator

Problem 170

Sum of all the genes in a population is called
(a) Genome
(b) Gene pool
(c) Germplasm
(d) Gene bank

Hunza Gilgit

Numerade Educator

Problem 171

At a particular locus, frequency of 'A' allele is $0.6$ and that of 'a' is $0.4$. What would be the frequency of heterozygotes in a random mating population at equilibrium?
(a) $0.36$
(b) $0.48$
(c) $0.16$
(d) $0.24$

Hunza Gilgit

Numerade Educator

Problem 172

Genetic drift operates in
(a) Large isolated population
(b) Small isolated population
(c) Fast reproductive population
(d) Slow reproductive population

Hunza Gilgit

Numerade Educator

Problem 173

Match the following concepts of evolution in List-I with List-II and select the correct answer using the codes given below the lists:
$$
\begin{array}{ll}
\hline \text { List-I } & \text { List-II } \\
\hline \text { (A) Mutation } & \text { (1) Changes in population's allele frequencies } \\
\text { due to chance alone. } \\
\text { (B) Gene flow } & \text { (2) Differences in survival and reproduction } \\
\text { among variant individuals. } \\
\begin{array}{ll}
\text { (C) Natural selection } & \text { (3) Immigration, emigration change allele } \\
\text { frequencies. }
\end{array} \\
\text { (D) Genetic drift } & \text { (4) Source of new alleles } \\
\hline
\end{array}
$$
(a) $\mathrm{A}: 1, \mathrm{~B}: 2, \mathrm{C}: 3, \mathrm{D}: 4$
(b) $\mathrm{A}: 4, \mathrm{~B}: 2, \mathrm{C}: 3, \mathrm{D}: 1$
(c) $\mathrm{A}: 3, \mathrm{~B}: 1, \mathrm{C}: 4, \mathrm{D}: 2$
(d) $\mathrm{A}: 4, \mathrm{~B}: 3, \mathrm{C}: 2, \mathrm{D}: 1$

Sirisa Reddy

Numerade Educator

Problem 174

Which of the following concepts is known as the Sewall Wright effect?
(a) Genetic drift
(b) Isolation
(c) Gene pool
(d) Gene flow

Hunza Gilgit

Numerade Educator

Problem 175

Which of the following would stop evolution by barring the occurrence of the natural selection?
(a) If humans became extinct because of a disease or epidemic.
(b) If ozone depletion led to increased ultraviolet radiation which caused many new mutations.
(c) If a thermonuclear war killed most of the living organisms and changed the environment drastically.
(d) If genetic recombination, sexual reproduction and mutation stopped so that all offspring of all organisms were exact copies of their parents.

Hunza Gilgit

Numerade Educator

Problem 176

Directional selection
(a) Works against adaptive traits
(b) Favours intermediate forms of a trait
(c) Eliminates uncommon forms of alleles
(d) Shifts allele frequencies in a steady, consistent direction

Hunza Gilgit

Numerade Educator

Problem 177

Disruptive selection
(a) Eliminates uncommon forms of alleles
(b) Does not favour intermediate forms of a trait
(c) Shifts allele frequencies in a steady, consistent direction
(d) All the above

Hunza Gilgit

Numerade Educator

Problem 178

Which of these is a correct match?
(a)
(b)
(c)
(d) All the above

Hunza Gilgit

Numerade Educator

Problem 179

The processes of and $\quad$ generate variation and produces adaptation to the environment.
(a) Sexual selection, natural selection, mutation
(b) Mutation, sexual recombination, genetic drift
(c) Genetic drift, mutation, sexual recombination
(d) Mutation, sexual recombination, natural selection

Hunza Gilgit

Numerade Educator

Problem 180

Industrial melanism was highlighted by
(a) Polar bear
(b) Rock python
(c) Mimosa pudica
(d) Biston betularia

Hunza Gilgit

Numerade Educator

Problem 181

The phenomenon of 'Industrial melanism' demonstrates
(a) Natural selection
(b) Induced mutation
(c) Reproductive isolation
(d) Geographical isolation

Hunza Gilgit

Numerade Educator

Problem 182

The change of the lighter coloured variety of peppered moth, Biston betularia, to its darker variety (carbonaria) is due to
(a) Deletion of a segment of genes due to industrial pollution.
(b) Mutation of single Mendelian gene for survival in smoke laden industrial environment.
(c) Industrial carbon deposited on the wings of the moth resulting in darker variety.
(d) Translocation of a block of genes in chromosomes in response to heavy carbons.

Hunza Gilgit

Numerade Educator

Problem 183

Speciation usually occurs
(a) Suddenly
(b) By genetic drift
(c) When populations are geographically isolated
(d) When populations are not geographically isolated

Hunza Gilgit

Numerade Educator

Problem 184

Which is the basis for evolution?
(a) Cell
(b) Species
(c) Individual
(d) Population

Hunza Gilgit

Numerade Educator

Problem 185

The classical cxample of adaptive radiation in the development of new species is
(a) Darwin finches
(b) Marsupials of Australia
(c) Giant turtles
(d) All of these

Hunza Gilgit

Numerade Educator

Problem 186

The spread of genes from one breeding population to another by migration which may result in change in genc frequency is
(a) Genc flow
(b) Genetic drift
(c) Gene frequency
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 187

Arrange the periods of Palaeozoic era in ascending order in a geological time scale:
(a) Cambrian $\rightarrow$ Ordovician $\rightarrow$ Silurian $\rightarrow$ Devonian $\rightarrow$ Carboniferous $\rightarrow$ Permian
(b) Cambrian $\rightarrow$ Devonian $\rightarrow$ Ordovician $\rightarrow$ Silurian $\rightarrow$ Carboniferous $\rightarrow$ Permian
(c) Cambrian $\rightarrow$ Ordovician $\rightarrow$ Devonian $\rightarrow$ Silurian $\rightarrow$ Carboniferous $\rightarrow$ Permian
(d) Silurian $\rightarrow$ Devonian $\rightarrow$ Cambrian $\rightarrow$ Ordovician $\rightarrow$ Permian $\rightarrow$ Carboniferous

Hunza Gilgit

Numerade Educator

Problem 188

The presence of recessive trait is 16 per cent. The frequency of dominant allele in population is
(a) $0.6$
(b) $0.32$
(c) $0.84$
(d) $0.92$

Hunza Gilgit

Numerade Educator

Problem 189

The frequency of an autosomal lethal gene is $0.4$. The frequency of carrier in a population of 200 individual is
(a) 72
(b) 96
(c) 104
(d) 36

Hunza Gilgit

Numerade Educator

Problem 190

Darwin's finches are found in
(a) Tahiti
(b) Tundra
(c) Galapagos Island
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 191

In the developmental history of mammalian heart, it is observed that it passes through a two chambered fishlike heart, three chambered frog-like heart and finally four chambered stage. To which hypothesis can this above cited statement be approximated?
(a) Biogenetic law
(b) Lamarck's principle
(c) Hardy-Weinberg law
(d) Mendelian principles

Hunza Gilgit

Numerade Educator

Problem 192

Darwin's finches are an excellent example of
(a) Connecting links
(b) Brood parasitism
(c) Adaptive radiation
(d) Seasonal migration

Hunza Gilgit

Numerade Educator

Problem 193

Sweet potato and potato are examples of
(a) Homologous structures
(b) Analogous structures
(c) Both (a) and (b)
(d) None of these

Hunza Gilgit

Numerade Educator

Problem 194

The principle that gives the geneticists a tool to determine when evolution is occurring is
(a) Hardy-Weinberg principle
(b) Chemiosmotic theory
(c) Malthusian principle
(d) Cloning theory

Hunza Gilgit

Numerade Educator

Problem 195

Which of the following defines Hardy-Weinberg's law?
(a) $p^{2}+2 p q+q^{2}=0$
(b) $q^{2}+p^{2}+2 p q=0$
(c) $p^{2}+2 p q+q^{2}=1$
(d) $p^{2}+3 p q+q^{2}=1$

Hunza Gilgit

Numerade Educator

Problem 196

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and
(a) Saltation
(b) Evolution
(c) Limiting factors
(d) Natural selection

Hunza Gilgit

Numerade Educator

Problem 197

In this figure, which kind of selection does $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ represent respectively?
(a) A: Stabilizing, B: Disruptive, C: Directional
(b) A: Stabilizing, B: Directional, C: Disruptive
(c) A: Disruptive, B: Stabilizing, C: Directional
(d) A: Directional, B: Disruptive, C: Stabilizing

Hunza Gilgit

Numerade Educator

Problem 198

Assertion: The Big Bang theory attempts to explain to us the origin of universe. Reason: It talks of a singular huge explosion unimaginable in physical terms.

Paras Aggarwal

Numerade Educator

Problem 199

Assertion: Natural selection is the mechanism of evolution. Reason: Those who better fit in an environment, leave more progeny than other, therefore will survive more and hence selected by nature.

Paras Aggarwal

Numerade Educator

Problem 200

Assertion: Homologous organ represent divergent cvolution. Reason: Homology indicate common ancestry.

Paras Aggarwal

Numerade Educator

Problem 201

Assertion: Single step large mutation is called saltation. Reason: Mutation is responsible for speciation.

Paras Aggarwal

Numerade Educator

Problem 202

Assertion: Homo erectus probably ate meat. Reason: Homo erectus had a large brain around $900 \mathrm{cc}$.

Paras Aggarwal

Numerade Educator

Problem 203

Assertion: Pouched mammals of Australia survived by continental drift. Reason: It is because of lack of competition from any other mammals.

Paras Aggarwal

Numerade Educator

Problem 204

Assertion: Agriculture came around 18,000 years ago.
Reason: Pre-historic cave art developed about 10,000 years ago.

Paras Aggarwal

Numerade Educator

Problem 205

Assertion: Dryopithecus was more man-like. Reason: Ramapithecus was more ape-like.

Paras Aggarwal

Numerade Educator

Problem 206

Assertion: Comparative biochemistry provides strong evidence in favour of common ancestry of living beings. Reason: Genetic code in universal.

Paras Aggarwal

Numerade Educator

Problem 207

Assertion: Human losses gene for tail. Reason: Lamarck's theory of evolution is known as the theory of continuity of germplasm.

Paras Aggarwal

Numerade Educator

Problem 208

Assertion: There was no atmosphere on early earth. Reason: Temperature of earth at that time is very high.

Paras Aggarwal

Numerade Educator

Problem 209

Assertion: Pasteur demonstrates that life comes from pre existing life. Reason: Pasteur performed swan neck experiment.

Paras Aggarwal

Numerade Educator

Problem 210

Assertion: Formation of life was preceded by chemical evolution. Reason: Inorganic molecules are formed from disintegration of organic constituents initially.

Paras Aggarwal

Numerade Educator

Problem 211

Assertion: Chemical evolution was more or less accepted. Reason: Miller in his experiment observed the formation of amino acids in similar condition which was their on earth at the time of origin.

Paras Aggarwal

Numerade Educator

Problem 212

Assertion: All organisms we see today were created as such. Reason: Diversity was always same on earth since creation

Paras Aggarwal

Numerade Educator

Problem 213

Assertion: New life forms have arisen at different times in the history of earth. Reason: Fossils study showed that life forms varied over time.

Paras Aggarwal

Numerade Educator

Problem 214

Assertion: Homology is based on divergent evolution. Reason: Analogy is result of convergent evolution.

Paras Aggarwal

Numerade Educator

Problem 215

Assertion: Sweet potato and potato is an example for analogy. Reason: They have different origin but perform same function that is storage of food.

Paras Aggarwal

Numerade Educator

Problem 216

Assertion: Herbicide resistant varieties can be selected in lesser time scale. Reason: It can be possible by anthropogenic action that is excessive use of herbicides.

Paras Aggarwal

Numerade Educator