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NEET • BIOLOGY • EVOLUTION
Evolution practice · Mixed difficulty
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Showing 271-300 of 348 questions
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271
Easy
271 of 348
Remembering
+4 | -1
What was the name of the sail ship used by Charles Darwin during the sea Voyage?
View answer and explanation
Correct option: A
HMS Beagle
Option A is correct because Charles Darwin used the HMS Beagle for his famous voyage.
272
Medium
272 of 348
Understanding
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What’s the difference between natural selection and sexual selection?
View answer and explanation
Correct option: C
Sexual selection is a type of natural selection
Option C (Sexual selection is a type of natural selection) is correct because sexual selection is a specific form of natural selection where traits that increase mating success are favored, even if they may not enhance survival.
273
Medium
273 of 348
Remembering
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Hardy-Weinberg principle can be expressed as
View answer and explanation
Correct option: D
Option D () is correct because it represents the Hardy-Weinberg equation, where p and q are allele frequencies.
274
Medium
274 of 348
Understanding
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Pre-industrialization era saw the catching of dark-winged moths and survival of white-winged moths; during post-industrialization period, the white-winged moths were caught by predators and dark-winged moths survived. The phenomenon of industrial melanism is an example of
View answer and explanation
Correct option: C
Directional selection because of smoke from the industries
Option C (Directional selection because of smoke from the industries) is correct because the change in moth population color due to industrial pollution is a clear example of directional selection, where one extreme phenotype is favored.
275
Easy
275 of 348
Understanding
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Assertion: Single step large mutation is called saltation.
Reason: Mutation is responsible for speciation.
Reason: Mutation is responsible for speciation.
View answer and explanation
Correct option: B
If both the assertion and reason are true but the reason is not a correct explanation of the assertion
Option B (If both the assertion and reason are true but the reason is not a correct explanation of the assertion) is correct because while saltation (large, single-step mutation) is a real phenomenon, it's not the primary driver of speciation. Mutation is responsible for speciation, but not necessarily through single-step mutations.
276
Medium
276 of 348
Understanding
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Which of the following statement is the most appropriate one in an evolutionary sense?
View answer and explanation
Correct option: B
A lion has many cubs, eight of which live to adulthood
Option B (A lion has many cubs, eight of which live to adulthood) is correct because evolutionary success is measured by the number of offspring that survive and reproduce, passing on their genes to the next generation.
277
Medium
277 of 348
Remembering
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Which of the following animals is not only a living fossil but also considered as connecting link?
View answer and explanation
Correct option: C
Neopilina
Option C (Neopilina) is correct because Neopilina is considered a living fossil and a connecting link, exhibiting characteristics of both annelids and molluscs.
278
Easy
278 of 348
Understanding
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Which one of the following phenomenon supports Darwin’s concept of natural selection in organic evolution?
View answer and explanation
Correct option: C
Prevalence of pesticide resistance insects
Option C (Prevalence of pesticide resistance insects) is correct because it demonstrates natural selection where insects with resistance survive and reproduce, leading to a higher proportion of resistant insects.
279
Medium
279 of 348
Understanding
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Weismann cut off tails of mice generation after generation but tails neither disappeared nor shortened showing that
View answer and explanation
Correct option: A
Lamarck’s theory was wrong
Option A (Lamarck’s theory was wrong) is correct because Weismann's experiment disproved the inheritance of acquired characteristics, a central tenet of Lamarckism.
280
Easy
280 of 348
Understanding
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Which of the following statements stands in favour of abiogenesis: I. Spontaneous generation, II. Origin of viruses and microbes, III. Origin of life from living organism, IV. Origin of life from non-living organism. The correct combination is
View answer and explanation
Correct option: D
I and IV
Option D (I and IV) is correct because abiogenesis refers to spontaneous generation and the origin of life from non-living matter.
281
Hard
281 of 348
Remembering
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Gaseous mixture used by Miller for the synthesis of amino acids through heat and electric discharge included
View answer and explanation
Correct option: A
Methane, ammonia, hydrogen and water vapours
Option A (Methane, ammonia, hydrogen and water vapours) is correct because this was the gaseous mixture used in Miller's experiment to simulate early Earth conditions.
282
Medium
282 of 348
Remembering
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Natural indicator of industrial pollution is
View answer and explanation
Correct option: C
Lichen
Option C is correct because lichens are known to be sensitive to air pollution, making them good indicators of industrial pollution.
283
Easy
283 of 348
Remembering
+4 | -1
In which of the following era first mammal like reptile originated?
View answer and explanation
Correct option: A
Permian period
Option A (Permian period) is correct because mammal-like reptiles, known as therapsids, originated during the Permian period.
284
Medium
284 of 348
Analyzing
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The biochemical analysis of different chlorophyll pigments in plants would be most useful in determining
View answer and explanation
Correct option: D
Which plants might have a common ancestor
Option D is correct because chlorophyll pigments can provide clues about evolutionary relationships and common ancestry among plants.
285
Hard
285 of 348
Understanding
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No organic compounds are synthesized in direction of origin of life now-a-days due to :
View answer and explanation
Correct option: C
High conc. of
Option C (High conc. of ) is correct because the presence of free oxygen in the atmosphere prevents the spontaneous formation of organic compounds due to its oxidizing nature.
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286
Hard
286 of 348
Understanding
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Read the following statements.
I) Directional selection occurs when natural selection favours one extreme of continuous variation.
II) Disruptive selection occurs when natural selection favours both extremes of continuous variation.
III) In directional selection, a population's genetic variance shifts toward a new phenotype when exposed to environmental changes.
IV) Random changes in gene frequencies due to chance in large population is called genetic drift.
True statements are
I) Directional selection occurs when natural selection favours one extreme of continuous variation.
II) Disruptive selection occurs when natural selection favours both extremes of continuous variation.
III) In directional selection, a population's genetic variance shifts toward a new phenotype when exposed to environmental changes.
IV) Random changes in gene frequencies due to chance in large population is called genetic drift.
True statements are
View answer and explanation
Correct option: C
All except IV
Option C (All except IV) is correct because statements I, II, and III accurately describe directional and disruptive selection, while statement IV describes genetic drift in small populations, not large ones.
287
Medium
287 of 348
Analyzing
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Read the statements and choose the option that states all the correct ones.
(i) Vertebrate hearts are example of homologous organs
(ii) Eye of octopus and mammals are analogous
(iii) Darwin's finches are examples of evolution by anthropogenic action
(iv) Evolution of modern man appears to be parallel evolution of human brain and language
(i) Vertebrate hearts are example of homologous organs
(ii) Eye of octopus and mammals are analogous
(iii) Darwin's finches are examples of evolution by anthropogenic action
(iv) Evolution of modern man appears to be parallel evolution of human brain and language
View answer and explanation
Correct option: B
(i), (ii) and (iv)
Option B is correct because vertebrate hearts are homologous, octopus and mammal eyes are analogous, and the evolution of modern man involves brain and language development.
288
Hard
288 of 348
Understanding
+4 | -1
Assertion (A): The primitive atmosphere was reducing atmosphere.
Reason (R): Free oxygen was absent in the primitive atmosphere.
Reason (R): Free oxygen was absent in the primitive atmosphere.
View answer and explanation
Correct option: A
If both (A) and (R) are true and (R) is the correct explanation of (A)
Option A (If both (A) and (R) are true and (R) is the correct explanation of (A)) is correct because the absence of free oxygen in the primitive atmosphere is the reason why it was a reducing atmosphere.
289
Easy
289 of 348
Analyzing
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There are two opposing views about origin of Modern man. According to one view, Homo eretus in Asia were the ancestors of modern man. A study of variations of DNA however suggested African origin of modern man. What kind of observation on DNA variation could suggest this?
View answer and explanation
Correct option: C
Greater variation in Asia than in Africa
Option A (Greater variation in African than in Asia) is correct because greater genetic variation in a population suggests it is the origin from which other populations migrated.
290
Hard
290 of 348
Application
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In a population of 100 cats, 36 were white and 64 were black. If the black allele is dominant over white
allele, what is the frequency of black allele in this population of cats?
allele, what is the frequency of black allele in this population of cats?
View answer and explanation
Correct option: B
0.4
Option B (0.4) is correct because the frequency of the white allele (q) is the square root of the frequency of white cats, and the frequency of the black allele (p) is 1-q.
291
Hard
291 of 348
Remembering
+4 | -1
Which of the following is the first vascular plant to be represented by an extinct group?
View answer and explanation
Correct option: B
Lycopods
Option B (Lycopods) is correct because lycopods were among the first vascular plants and are represented by an extinct group.
292
Hard
292 of 348
Understanding
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[A]: 'Ontogeny recapitulates phylogeny' was the concept put forward by Haeckel.
[R]: The embryonic stages show the course of evolution which an adult has gone through during development.
[R]: The embryonic stages show the course of evolution which an adult has gone through during development.
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option A (Both A and R are true and R is the correct explanation of A) is correct because Haeckel's concept states that embryonic development reflects evolutionary history.
293
Medium
293 of 348
Remembering
+4 | -1
The pioneers in the field of organic evolutions are
View answer and explanation
Correct option: B
Darwin, Hugo de Vries, Lamarck, Huxley
Option B is correct because it lists Darwin, Hugo de Vries, Lamarck, and Huxley as pioneers in the field of organic evolution.
294
Hard
294 of 348
Analyzing
+4 | -1
A biologist is trying to infer how five closely related species of snakes are related to one another. She noticed that some of the snakes have forked tongues and others do not. Which of the following would help her to distinguish their ancestral state?
View answer and explanation
Correct option: B
She locates a specimen of a more distantly related snake to see if it has a forked tongue
Option B is correct. Comparing to a more distantly related snake helps determine if the forked tongue is an ancestral trait (present in the common ancestor) or a derived trait (evolved later).
295
Medium
295 of 348
Remembering
+4 | -1
Which of the following statements are correct? I. Bird originated 150 million years ago, II. Mammals originated 200 million years ago, III. Multicellular organisms 1 billion years ago. The correct combination is
View answer and explanation
Correct option: D
I, II and III
Option D (I, II and III) is correct because all three statements about the origin of birds, mammals, and multicellular organisms are accurate.
296
Medium
296 of 348
Analyzing
+4 | -1
Find the incorrect statement.
View answer and explanation
Correct option: D
Adaptive ability is acquired
The correct answer is D (Adaptive ability is acquired) because adaptive ability is inherited through genetic variations, not acquired during an organism's lifetime.
297
Easy
297 of 348
Understanding
+4 | -1
According to Darwin, two different areas within a continent have different species because they have different:
View answer and explanation
Correct option: C
Environments
Option C (Environments) is correct because Darwin proposed that different environments lead to different selective pressures, resulting in different species.
298
Hard
298 of 348
Understanding
+4 | -1
Read the following statements and find out correct statements:
A) More individuals acquire peripheral character value at both ends of distribution curve - Directional selection.
B) Change in gene frequency occurs by chance - Genetic drift.
C) More individuals acquire mean character value - Stabilizing selection.
D) Sudden disappearance of dinosaurs from the earth - 200 mya.
A) More individuals acquire peripheral character value at both ends of distribution curve - Directional selection.
B) Change in gene frequency occurs by chance - Genetic drift.
C) More individuals acquire mean character value - Stabilizing selection.
D) Sudden disappearance of dinosaurs from the earth - 200 mya.
View answer and explanation
Correct option: C
B and C
Option B is correct because genetic drift is defined as a change in gene frequency by chance, and the sudden disappearance of dinosaurs occurred approximately 66 million years ago (mya), not 200 mya.
299
Hard
299 of 348
Understanding
+4 | -1
Which of the following is the relatively most accurate method for dating fossils?
View answer and explanation
Correct option: C
Electron spin resonance method
Option C is correct because Electron Spin Resonance (ESR) can date materials beyond the range of radiocarbon dating and is more precise than potassium-argon or uranium-lead for certain time scales.
300
Medium
300 of 348
Analyzing
+4 | -1
Assertion (A): The first living organisms were heterotrophs.
Reason (R): Hot Dilute soup was formed in the ocean.
Reason (R): Hot Dilute soup was formed in the ocean.
View answer and explanation
Correct option: B
If both (A) and (R) are true but (R) is not the correct explanation of (A)
Option B (If both (A) and (R) are true but (R) is not the correct explanation of (A)) is correct because while both the assertion about heterotrophs and the reason about the hot dilute soup are true, the hot dilute soup doesn't directly explain why the first organisms were heterotrophs.
Revision notes and key takeaways
Review EVOLUTION in your textbook or class notes, then use this set to check your understanding.
Showing 271-300 of 348 questions