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NEET • BIOLOGY • EVOLUTION

Evolution practice · Mixed difficulty

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Showing 61-90 of 348 questions

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61 Medium

61 of 348

Understanding +4 | -1

Darwin asserted that …A… which are heritable and which makes the resources utilization …B… for few, will enable only those to reproduce and leave …C… progeny.  Choose the correct option for A, B and C to complete the given statement

View answer and explanation

Correct option: A

A-variations, B-better, C-more

Option A is correct because Darwin's theory of natural selection emphasizes heritable variations leading to better resource utilization and increased progeny.

62 Hard

62 of 348

Remembering +4 | -1

Neanderthal man had a brain size of :

View answer and explanation

Correct option: C

1400 \mathrm{cc}

Option C (

1400 \mathrm{cc}

.) is correct because the Neanderthal man had a brain size of approximately 1400 cc.

63 Medium

63 of 348

Remembering +4 | -1

In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by

View answer and explanation

Correct option: C

2pq

Option C (2pq) is correct because in the Hardy-Weinberg equation, 2pq represents the frequency of heterozygous individuals.

64 Hard

64 of 348

Remembering +4 | -1

Flowering plants (angiosperms) appeared in which of the following period?

View answer and explanation

Correct option: A

Cretaceous

Option A (Cretaceous) is correct because angiosperms (flowering plants) first appeared and diversified during the Cretaceous period.

65 Hard

65 of 348

Remembering +4 | -1

What was the reason of mass extinction during mesozoic era?

View answer and explanation

Correct option: A

Due to meteorite falling on earth

Option A (Due to meteorite falling on earth) is correct because a large meteorite impact is widely believed to have caused the mass extinction at the end of the Mesozoic era.

66 Hard

66 of 348

Understanding +4 | -1

The chronological order of human evolution from first human - like being the hominid is possibly

View answer and explanation

Correct option: C

Homo habilis

\rightarrow

Home erectus

\rightarrow

Neanderthal man

\rightarrow

Homo sapiens

Option C (Homo habilis

\rightarrow

Home erectus

\rightarrow

Neanderthal man

\rightarrow

Homo sapiens) is the correct chronological order of human evolution.

67 Hard

67 of 348

Understanding +4 | -1

Convergent evolution is illustrated by

View answer and explanation

Correct option: A

Dogfish and whale

Option A (Dogfish and whale) is correct because they are distantly related but have evolved similar body shapes due to similar aquatic environments.

68 Medium

68 of 348

Analyzing +4 | -1

Which characteristic of living monkeys suggests that the earliest anthropoids were monkey-like?

View answer and explanation

Correct option: D

Of all the anthropoids, monkeys have brains that are most similar in size (relative to body size) to those of prosimians

Option D is correct. Monkeys, among anthropoids, have brain sizes relative to their body size that are most similar to prosimians, suggesting a closer link to the earliest anthropoids.

69 Easy

69 of 348

Remembering +4 | -1

Name given to fossil hominid of Shivalik hills in India is

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Correct option: A

Ramapithecus

Option A (Ramapithecus) is correct because Ramapithecus is the fossil hominid discovered in the Shivalik hills of India.

70 Easy

70 of 348

Understanding +4 | -1

Which of the following is not vestigial in man?

View answer and explanation

Correct option: B

Nails

Option B (Nails) is correct because nails have a present and functional role in humans, unlike vestigial structures.

71 Hard

71 of 348

Remembering +4 | -1

Which scientist are contributed in modern
synthetic theory of evolution:

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Correct option: D

All

Option D is correct because Hugo de Vries, Hardy and Weinberg, and Ernst Mayr all contributed to the modern synthetic theory of evolution.

72 Easy

72 of 348

Understanding +4 | -1

Phenomenon of industrial melanism demonstrates

View answer and explanation

Correct option: C

Natural selection

Option C (Natural selection) is correct because industrial melanism demonstrates how environmental changes can lead to a shift in the frequency of certain traits within a population due to selective pressures.

73 Hard

73 of 348

Analyzing +4 | -1

Homo sapiens arose in Africa and moved across continent and developed into distinct races

A. The greatest number of different mitochondrial DNA sequences occurs among modern Africa.

B. Variations are maximum in the mitochondrial DNA of Asians than Africans.

C. Mitochondrial DNA does not show mutation, so any variation cannot be easily traced in family tree.

Choose the correct option which support it.

View answer and explanation

Correct option: A

A only

Option A is correct. The greatest number of different mitochondrial DNA sequences occurs among modern Africans, supporting the "Out of Africa" theory.

74 Medium

74 of 348

Understanding +4 | -1

Which is not true of Archaeopteryx?

View answer and explanation

Correct option: D

Connecting link between birds and amphibians

Option D (Connecting link between birds and amphibians) is correct because Archaeopteryx is a connecting link between reptiles and birds, not amphibians.

75 Easy

75 of 348

Remembering +4 | -1

Saltation stands for

View answer and explanation

Correct option: A

Single step large mutation

Option A is correct because saltation refers to a single, large-scale mutation that leads to significant evolutionary change.

Explore Other Chapters in BIOLOGY

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ANIMAL KINGDOM 756 MCQs PLANT KINGDOM 415 MCQs ANATOMY OF FLOWERING PLANTS 404 MCQs MOLECULAR BASIS OF INHERITANCE 404 MCQs CHEMICAL COORDINATION AND INTEGRATION 387 MCQs PRINCIPLE OF INHERITANCE AND VARIATION 374 MCQs

76 Easy

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Remembering +4 | -1

Fitness according to Darwin refers to

View answer and explanation

Correct option: A

Reproductive fitness

Option A (Reproductive fitness) is correct because Darwinian fitness refers to an organism's ability to reproduce and pass on its genes to the next generation.

77 Medium

77 of 348

Understanding +4 | -1

Identify the phenomenon in which a new set of population is formed from the set of existing population due to the excessive change in the allele frequency

View answer and explanation

Correct option: A

Founder effect

Option A (Founder effect) is the correct answer because the founder effect describes the establishment of a new population by a small number of individuals from a larger population, leading to altered allele frequencies.

78 Hard

78 of 348

Understanding +4 | -1

Directional selection favours

View answer and explanation

Correct option: A

One extreme from over the other extreme from over intermediate from of a trait

Option A (One extreme from over the other extreme from over intermediate from of a trait) is correct because directional selection shifts the population towards one extreme phenotype.

79 Medium

79 of 348

Application +4 | -1

For the MN – blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected frequency of MN – blood group bearing organisms is likely to be:

View answer and explanation

Correct option: A

0.42

Option A (0.42) is correct because the expected frequency of the MN blood group is calculated using the Hardy-Weinberg principle: 2pq, where p=0.7 and q=0.3.

80 Easy

80 of 348

Understanding +4 | -1

Human arm is homologous to

View answer and explanation

Correct option: D

Both (1) and (3)

Option D (Both (1) and (3)) is correct because human arms, seal flippers, and bird wings share a common ancestry and underlying bone structure.

81 Medium

81 of 348

Remembering +4 | -1

‘Every cell of the body contributes gemmules to the germ cells and so shares in the transmission of inherited characters’, this theory is known as

View answer and explanation

Correct option: B

Theory of germplasm

Option C (Theory of pangenesis) is correct because the description matches Darwin's theory of pangenesis.

82 Hard

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Understanding +4 | -1

[A]: In some organisms the end stages of the ancestral development pattern are dropped, as in case of neoteny.

[R]: In some animals, some middle stages are dropped in the descendents.

View answer and explanation

Correct option: B

Both A and R are true and R is not the correct explanation of A

Option B (Both A and R are true and R is not the correct explanation of A) is correct because both the assertion and reason are true statements about evolutionary developmental biology, but the reason does not explain the assertion.

83 Medium

83 of 348

Analyzing +4 | -1

Assertion: Analogous structures are different
in appearance with same function.

Reason: Divergent evolution leads to analogy.

View answer and explanation

Correct option: C

If Assertion is true but Reason is false

Option C is correct because the assertion is true (analogous structures have different appearance but same function), but the reason is false (divergent evolution leads to homology, not analogy).

84 Easy

84 of 348

Understanding +4 | -1

Which one of the following features occurs in the direction of the evolution for human species?

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Correct option: D

All of these

Option D (All of these) is correct because all listed features (well-developed brain, opposable thumb, binocular vision) have increased during human evolution.

85 Medium

85 of 348

Understanding +4 | -1

Anthropoids were evolved into

View answer and explanation

Correct option: A

Apes, Proconsul and monkeys

Option A (Apes, Proconsul and monkeys) is correct because Anthropoids are a group that includes apes, monkeys, and their extinct ancestors like Proconsul.

86 Medium

86 of 348

Remembering +4 | -1

Give the name of the first organism who invaded land

View answer and explanation

Correct option: A

Plants

Option A (Plants) is correct because plants were the first organisms to colonize land.

87 Hard

87 of 348

Understanding +4 | -1

Darwin’s pangenesis theory is similar to the inheritance of acquired characters. Then what will be correct according to its function?

View answer and explanation

Correct option: D

There should be some physical basis for inheritance

Option D (There should be some physical basis for inheritance) is correct because pangenesis proposed particles from body parts contribute to inheritance, implying a physical basis.

88 Hard

88 of 348

Understanding +4 | -1

In primordial atmosphere, when the living organism evolved, the respiration process was:

View answer and explanation

Correct option: D

Anaerobic because early atmosphere contained little or no oxygen

Option D (Anaerobic because early atmosphere contained little or no oxygen) is correct because the early atmosphere lacked significant oxygen, making anaerobic respiration the only viable option for early life forms.

89 Hard

89 of 348

Understanding +4 | -1

Which of the following does not support evolution

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Correct option: D

None of these

Option D (None of these) is correct because mutualism, parasitism, and commensalism are all ecological interactions that can influence evolution.

90 Easy

90 of 348

Understanding +4 | -1

Which of the following are the correct pair of homologous organs? I. Hands of man and wings of bat,  II. Wings of bat and wings of cockroach,  III. Wings of bird and wings of butterfly,  IV. Fins of fish and forelimbs of horse,  V. Forearm of human and forelimbs of horse.  The correct combination is visible in option

View answer and explanation

Correct option: B

I and V

Option B (I and V) is correct because hands of man and wings of bat, and forearm of human and forelimbs of horse are examples of homologous structures, sharing a common ancestry.

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Evolution practice · Mixed difficulty

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