Evolution NEET PYQReal NEET & AIPMT 2005–2021 questions, year-tagged, with solutions
By the RankUp team, founded by Dr. Deepak Sahu (MBBS Gold Medalist, NEET PG AIR 1731) · Updated
Every Evolution question from the NEET & AIPMT papers on this site (2005–2021), newest first. Each is tagged with its paper. Tap an option to check your answer and read the explanation.
- Chapter
- NCERT Class 12
- PYQs here
- 66
- Papers
- NEET & AIPMT 2005–2021
- In the app
- 642+ questions
Evolution previous year questions
66 questions. Tap an option to check your answer.
Q1NEET 2021
The factor that leads to Founder effect in a population is :
Not quite — the answer is D.
When a small group breaks away and its allele frequencies change by chance, the new population ends up with a different gene pool; this chance change is genetic drift, and the founder effect is a case of it. Natural selection changes allele frequencies because of fitness differences, not by chance.
Q2NEET 2021
Match List - I with List - II. List - I | List - II (a) Adaptive radiation | (i) Selection of resistant varieties due to excessive use of herbicides and pesticides (b) Convergent evolution | (ii) Bones of forelimbs in Man and Whale (c) Divergent evolution | (iii) Wings of Butterfly and Bird (d) Evolution by anthropogenic action | (iv) Darwin Finches Choose the correct answer from the options given below.
Not quite — the answer is A.
Darwin's finches show adaptive radiation, wings of butterfly and bird are analogous organs showing convergent evolution, forelimbs of man and whale are homologous organs showing divergent evolution, and resistance after heavy herbicide and pesticide use is evolution by anthropogenic action. Hence (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i).
Q3NEET 2020 · Q38
From his experiments, S.L. Miller produced amino acids by mixing the following in a closed flask:
Not quite — the answer is A.
Miller made amino acids by passing electric sparks through a closed flask of CH₄, H₂, NH₃ and water vapour at 800°C. CH₃ is a radical and NH₄ is not a gas, so those options are wrong, and the temperature used was 800°C, not 600°C.
Q4NEET 2020 · Q39
Embryological support for evolution was disapproved by:
Not quite — the answer is A.
Ernst Haeckel argued that embryos of all vertebrates share features absent in adults, and Karl Ernst von Baer rejected this, noting that embryos never pass through the adult stages of other animals. Darwin and Wallace proposed natural selection, and Oparin worked on the origin of life.
Q5NEET 2020 · Q44
Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action? (a) Darwin's Finches of Galapagos islands. (b) Herbicide resistant weeds. (c) Drug resistant eukaryotes. (d) Man-created breeds of domesticated animals like dogs.
Not quite — the answer is C.
Herbicide-resistant weeds, drug-resistant eukaryotes and man-made breeds of dogs all evolved because of human action (chemicals or artificial selection). Darwin's finches arose by natural adaptive radiation on the Galapagos, not through human activity.
Q6NEET 2020 · Q73
Flippers of Penguins and Dolphins are examples of:
Not quite — the answer is B.
Penguin flippers (bird wing) and dolphin flippers (mammal forelimb) have similar function and shape but come from different lineages, an example of convergent evolution (analogy). Adaptive radiation is divergence from a common ancestor, and industrial melanism is a case of natural selection in moths.
Q7NEET 2019 · Q107
In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place ?
Not quite — the answer is B.
Individuals with the average (intermediate) weight survive while both extremes die, which is stabilizing selection. Disruptive selection would favour both extremes, and directional selection would favour only one extreme.
Q8NEET 2019 · Q117
Match the hominids with their correct brain size : (a) Homo habilis — (i) 900 cc (b) Homo neanderthalensis — (ii) 1350 cc (c) Homo erectus — (iii) 650-800 cc (d) Homo sapiens — (iv) 1400 cc Select the correct option.
Not quite — the answer is C.
Per NCERT, Homo habilis had a brain of 650–800 cc, Homo erectus about 900 cc, Neanderthal man about 1400 cc and modern Homo sapiens about 1350 cc. The trap is assuming modern humans have the largest brain; Neanderthals had a slightly larger one.
Q9NEET 2019 · Q118
Variations caused by mutation, as proposed by Hugo de Vries, are :
Not quite — the answer is B.
De Vries described mutations as large, sudden, random and directionless, in contrast to Darwin's small, directional variations. 'Small' describes Darwinian variation, not mutation.
Q10NEET 2019 · Q151
A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population ?
Not quite — the answer is C.
p = 0.4 so q = 0.6. By Hardy–Weinberg, AA = p² = 0.16, Aa = 2pq = 2 × 0.4 × 0.6 = 0.48 and aa = q² = 0.36. Forgetting the factor 2 in 2pq gives 0.24, the main trap.
Q11NEET 2018 · Q160
According to Hugo de Vries, the mechanism of evolution is
Not quite — the answer is B.
From his work on evening primrose, de Vries proposed that new species arise by large, sudden mutations producing single-step jumps, which he called saltation. Darwin, in contrast, stressed small continuous variations, so minor or multiple-step changes describe Darwinian ideas, not de Vries.
Q12NEET 2018 · Q177
Among the following sets of examples for divergent evolution, select the incorrect option:
Not quite — the answer is D.
The eyes of octopus (a mollusc) and of mammals have similar function but different origin, so they are analogous organs produced by convergent evolution. The brain, heart and forelimbs of bat, man and cheetah share a common mammalian origin and are homologous, showing divergent evolution.
Q13NEET 2018 · Q179
The similarity of bone structure in the forelimbs of many vertebrates is an example of
Not quite — the answer is C.
Forelimbs of whales, bats, cheetahs and humans have the same basic pattern of bones (humerus, radius-ulna, carpals, metacarpals, phalanges) though they do different jobs, which shows common ancestry: these are homologous organs. Analogy and convergent evolution refer to similar function with different structure and origin.
Q14NEET 2017 · Q129
Artificial selection to obtain cows yielding higher milk output represents:
Not quite — the answer is B.
Choosing only high-yielding cows for breeding generation after generation moves the mean milk yield of the population steadily towards one extreme, which is directional selection. Stabilising selection favours the average value, and disruptive selection favours both extremes.
Q15NEET 2017 (Gujarati paper) · Q48
Flippers of Penguins and Dolphins are the example of:
Not quite — the answer is B.
Penguin flippers are modified bird wings while dolphin flippers are modified mammalian forelimbs; they look alike and do the same job (swimming) because of similar habitat, which is convergent evolution producing analogous structures. They are not homologous in the sense intended, since their resemblance is due to function rather than shared ancestry of the flipper form.
Q16NEET 2017 (Gujarati paper) · Q121
Continental drift led to disappearance of a number of South American mammals because:
Not quite — the answer is C.
When South America joined North America, the native pouched mammals of South America were overridden and outcompeted by North American fauna that migrated in. Disease outbreaks or climatic shifts are not the explanation NCERT gives.
Q17NEET 2016 Phase 2 · Q166
Genetic drift operates in
Not quite — the answer is A.
Genetic drift is a random change in allele frequency by chance, and its effect is strongest in small, isolated populations such as those formed by founder effect or bottlenecks. In large populations chance changes even out, and a non-reproducing population passes on no alleles at all.
Q18NEET 2016 Phase 2 · Q167
In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by
Not quite — the answer is B.
From (p + q)² = p² + 2pq + q² = 1, the heterozygote frequency is 2pq, because the heterozygote can form in two ways. p² and q² are the frequencies of the two homozygotes, and pq on its own is only half the heterozygote frequency.
Q19NEET 2016 Phase 2 · Q168
The chronological order of human evolution from early to the recent is
Not quite — the answer is B.
Ramapithecus lived about 15 million years ago, Australopithecines about 2 million years ago, then Homo habilis, followed by Homo erectus about 1.5 million years ago. Putting Australopithecus before Ramapithecus, or Homo habilis before Australopithecus, breaks this NCERT sequence.
Q20NEET 2016 Phase 2 · Q169
Which of the following is the correct sequence of events in the origin of life? I. Formation of protobionts II. Synthesis of organic monomers III. Synthesis of organic polymers IV. Formation of DNA-based genetic systems
Not quite — the answer is C.
Chemical evolution first formed simple organic monomers, which joined into polymers; these then gathered into protobionts (coacervates), and DNA-based genetic systems arose last after RNA-based ones. Sequences that start with protobionts, or place the DNA genetic system before protobionts, do not fit this order.
Q21NEET 2016 Phase 1 · Q144
Which of the following structures is homologus to the wing of a bird?
Not quite — the answer is D.
The bird's wing is a modified forelimb, and the whale's flipper is also a forelimb with the same basic bone plan (humerus, radius-ulna, carpals, digits), so they are homologous. The moth's wing is only analogous, a shark's dorsal fin is not a limb, and a hind limb is not the corresponding forelimb.
Q22NEET 2016 Phase 1 · Q148
Following are the two statements regarding the origin of life: (a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes. (b) The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of the following options is correct?
Not quite — the answer is C.
The first life forms arose in an oxygen-free atmosphere, so they were non-green anaerobic heterotrophs. The earliest autotrophs were chemoautotrophs that obtained energy from inorganic chemical reactions and did not release oxygen; oxygen-releasing photosynthesis came later with cyanobacteria-like organisms.
Q23NEET 2016 Phase 1 · Q150
Analogous structures are a result of:
Not quite — the answer is B.
Analogous structures, such as wings of butterflies and birds, perform similar functions but have different origins; they arise when unrelated lineages adapt to similar environments (convergent evolution). Divergent evolution from shared ancestry produces homologous structures.
Q24AIPMT 2015
Which of the following had the smallest brain capacity?
Not quite — the answer is A.
Homo habilis had a brain of about 650-800 cc, smaller than Homo erectus (about 900 cc), Neanderthal man (about 1400 cc) and modern humans (about 1350-1450 cc).
Q25AIPMT 2015
Which is the most common mechanism of genetic variation in the population of a sexually-reproducing organism?
Not quite — the answer is A.
In sexually reproducing organisms, crossing over and independent assortment in meiosis and random fusion of gametes recombine genes every generation, so recombination is the most common source of variation. Transduction is a bacterial process, and chromosomal aberrations are rare.
Q26AIPMT 2015
A population will not exist in Hardy-Weinberg equilibrium if:
Not quite — the answer is B.
Hardy-Weinberg equilibrium requires a large population, random mating, no mutation, no migration and no selection. Selective (non-random) mating changes genotype frequencies, so the population will not remain in equilibrium.
Q27AIPMT 2014
Which one of the following are analogous structures?
Not quite — the answer is A.
Gills of prawn and lungs of man both carry out respiration but differ in origin and structure, so they are analogous. Thorns of Bougainvillea and tendrils of Cucurbita are both modified stems, flippers of dolphin and legs of horse are both pentadactyl forelimbs, and bat and pigeon wings share the vertebrate forelimb pattern, so these are homologous.
Q28AIPMT 2014
In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa and the remaining 160 to aa. Based on this data, the frequency of allele A in the population is:
Not quite — the answer is B.
Each AA individual carries two A alleles and each Aa carries one, so frequency of A = (2 × 360 + 480) / (2 × 1000) = 1200/2000 = 0.6. The value 0.4 is the frequency of allele a, not A.
Q29NEET 2013
Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as
Not quite — the answer is B.
A change in allele frequency that happens by chance, not by selection, is genetic drift, and it is strongest in small populations. Gene flow is change due to migration, not chance.
Q30NEET 2013
The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge is called
Not quite — the answer is B.
When unrelated lineages facing similar environments evolve similar adaptations, the process is convergent evolution, which produces analogous structures. Adaptive radiation is the opposite pattern, where one ancestor gives rise to many differently adapted forms.
Q31NEET 2013
The tendency of population to remain in genetic equilibrium may be disturbed by
Not quite — the answer is D.
Hardy-Weinberg equilibrium needs random mating, no migration, no mutation, no selection and a large population. Lack of random mating disturbs the equilibrium, whereas random mating and absence of migration or mutation help maintain it.
Q32NEET 2013
The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of
Not quite — the answer is C.
The eyes of octopus (a mollusc) and cat (a mammal) differ in structure and origin but perform the same function, so they are analogous organs, which arise by convergent evolution. Homologous organs share origin but may differ in function.
Q33AIPMT 2012 Mains
The idea of mutations was brought forth by
Not quite — the answer is A.
Hugo de Vries proposed the mutation theory after his work on the evening primrose (Oenothera lamarckiana), describing sudden large changes that he called mutations. Darwin stressed small continuous variations, and Mendel described factors, not mutations.
Q34AIPMT 2012 Prelims
Which one of the following options gives one correct example each of convergent evolution and divergent evolution?
Not quite — the answer is B.
Eyes of octopus and mammals are analogous structures that evolved independently (convergent evolution), while the forelimb bones of vertebrates are homologous structures from a common ancestor (divergent evolution). Thorns of Bougainvillea and tendrils of Cucurbita are homologous, not convergent, and wings of butterflies and birds are analogous, not divergent.
Q35AIPMT 2012 Prelims
Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as
Not quite — the answer is B.
Adaptive radiation is the evolution of different species from a single ancestral point, radiating into other geographical areas and habitats, as in Darwin's finches. Divergent evolution describes homologous structures in general, not this pattern of spread.
Q36AIPMT 2012 Prelims
The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating foreheads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was
Not quite — the answer is C.
The Neanderthal man lived about 1,00,000 to 40,000 years ago in Europe, Asia and parts of Africa, with short stocky bodies, heavy brow ridges, retreating foreheads and large jaws. Cro-Magnon was a later modern human, and Ramapithecus and Homo habilis are much older.
Q37AIPMT 2012 Prelims
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?
Not quite — the answer is D.
The most significant trend in human evolution was the increase in cranial capacity (brain size), from about 650–800 cc in Homo habilis to about 1400 cc in Homo sapiens. Upright posture and binocular vision appeared earlier and are shared with other hominids or primates.
Q38AIPMT 2011 Prelims
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?
Not quite — the answer is A.
The most significant trend in the evolution of modern humans was the steady increase in brain capacity, from about 650–800 cc in Homo habilis to around 1,400 cc in Homo sapiens. Upright posture appeared much earlier, in the australopithecines.
Q39AIPMT 2010 Mains · Q15
The most apparent change during the evolutionary history of Homo sapiens is traced in
Not quite — the answer is D.
Across the human lineage the most marked trend is the steady rise in cranial capacity, from about 650-800 cc in Homo habilis, to about 900 cc in Homo erectus, to about 1400 cc in Homo sapiens. Upright walking appeared early and changed little afterwards, so it is not the most apparent trend through the lineage.
Q40AIPMT 2010 Prelims · Q128
Darwin’s finches are a good example of
Not quite — the answer is D.
From an ancestral seed-eating finch, many species with different beak shapes evolved on the Galapagos Islands to use different foods. Many forms branching from one ancestor into different habitats is adaptive radiation. Convergent evolution is the reverse: unrelated lineages becoming similar.
Q41AIPMT 2009 Prelims · Q135
In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of:
Not quite — the answer is D.
On soot-darkened tree trunks the dark moths were less visible to predatory birds and survived and reproduced more, so their frequency increased; NCERT uses this industrial melanism as an example of natural selection. It is camouflage, not mimicry of another species, and not inheritance of acquired characters.
Q42AIPMT 2008 Prelims · Q119
Thorn of Bougainvillea and tendril of Cucurbita are example of
Not quite — the answer is C.
Both the thorn of Bougainvillea and the tendril of Cucurbita are modified axillary branches (stem origin) that now do different jobs, which makes them homologous, the NCERT example of divergent evolution. Analogous organs would share function but differ in origin.
Q43AIPMT 2008 Prelims · Q124
What is true about the isolated small tribal populations?
Not quite — the answer is B.
A small isolated tribe has a small gene pool and no gene flow, so marriage within the tribe leads to inbreeding depression and can contribute to population decline. Inbreeding actually helps recessive hereditary disorders like colour blindness spread, and acquired traits such as a wrestler's muscles are not inherited.
Q44AIPMT 2008 Prelims · Q125
Which one of the following scientist's name is correctly matched with the theory put forth by him?
Not quite — the answer is B.
August Weismann proposed the continuity of germplasm, holding that only changes in germ cells are inherited. Pangenesis was Darwin's idea, inheritance of acquired characters was Lamarck's, and de Vries gave the mutation theory.
Q45AIPMT 2008 Prelims · Q126
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
Not quite — the answer is B.
Protobionts such as coacervates and microspheres were membrane-bounded droplets that kept an internal environment partly separate from their surroundings, but they lacked genetic material and so could not truly reproduce. Maintaining an internal environment is a correct property, not the incorrect one.
Q46AIPMT 2008 Prelims · Q127
Darwin's Finches are an excellent example of
Not quite — the answer is B.
From a seed-eating ancestor, Galapagos finches diversified into many species with different beaks suited to different diets, which NCERT presents as the classic case of adaptive radiation. They are not intermediates between two groups, so 'connecting links' does not apply.
Q47AIPMT 2008 Prelims · Q128
Which one of the following pairs of items correctly belongs to the category of organs mentioned against it?
Not quite — the answer is D.
Nephridia in earthworm and Malpighian tubules in cockroach are both excretory organs. Wings of bee and crow are analogous (not homologous), thorn and tendril are homologous (not analogous), and the blind spot is just where the optic nerve leaves the eye, not a vestigial organ.
Q48AIPMT 2007 Prelims · Q110
The concept of chemical evolution is based on
Not quite — the answer is C.
Chemical evolution (Oparin-Haldane) proposes that life arose when simple inorganic and organic molecules combined into more complex ones under the conditions of the early Earth, as Miller's experiment imitated. Solar radiation or heat were only energy sources within this idea, not the concept itself.
Q49AIPMT 2007 Prelims · Q126
The finches of Galapagos islands provide an evidence in favour of
Not quite — the answer is C.
Darwin's finches on the Galapagos show how one ancestral seed-eating stock spread over the islands and radiated into many forms with different beaks, which is evidence for evolution from geographical distribution (biogeography and adaptive radiation). They contradict special creation and do not show retrogressive evolution.
Q50AIPMT 2007 Prelims · Q162
When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed
Not quite — the answer is C.
Unrelated lineages that evolve similar features because they adapt to similar habitats show convergent evolution, producing analogous structures. Divergent evolution is the opposite, where related forms become different.
Q51AIPMT 2007 Prelims · Q164
Among the human ancestors the brain size was more than 1000 CC in
Not quite — the answer is D.
Neanderthal man had a brain of about 1400 cc. Homo erectus had about 900 cc and Homo habilis about 650-800 cc, so they fall below 1000 cc, and Ramapithecus was an ape-like hominid.
Q52AIPMT 2007 Prelims · Q165
Industrial melanism as observed in peppered moth proves that
Not quite — the answer is D.
Dark (melanic) moths existed before industrialisation because the melanic allele keeps arising by random mutation; soot-darkened trees only made them better camouflaged so natural selection increased their numbers. Pollution did not create melanism, and the dark form clearly had an advantage in industrial areas.
Q53AIPMT 2007 Prelims · Q174
Adaptive radiation refers to
Not quite — the answer is A.
Adaptive radiation is the evolution of many different species from one ancestral form as they spread into different habitats, as in Darwin's finches or Australian marsupials. Simple migration or an individual's adaptability is not speciation.
Q54AIPMT 2007 Prelims · Q176
Select the correct statement from the following.
Not quite — the answer is A.
NCERT describes fitness as the end result of an organism's ability to adapt and be selected by nature. Mutations are random and directionless while Darwinian variations are small and directional, and whales and camels also have seven cervical vertebrae (sloths and manatees are the exceptions).
Q55AIPMT 2007 Prelims · Q181
What is common to whale, seal and shark?
Not quite — the answer is B.
Whale and seal are mammals and the shark is a fish, yet all have streamlined bodies and flippers or fins for aquatic life; this similarity in unrelated groups is convergent evolution. Shark is cold-blooded and lacks blubber, so homoiothermy and subcutaneous fat do not apply to all three.
Q56AIPMT 2007 Prelims · Q182
One of the important consequences of geographical isolation is
Not quite — the answer is B.
Geographically separated populations stop exchanging genes, accumulate different variations and eventually become reproductively isolated, forming new species (allopatric speciation). Isolation promotes rather than prevents speciation.
Q57AIPMT 2006 Prelims · Q112
Which one of the following aminoacids was not found to be synthesized in Miller's experiment ?
Not quite — the answer is C.
Miller's spark-discharge experiment produced simple amino acids such as glycine, alanine and aspartic acid. Glutamic acid was not among those reported, so it is the odd one.
Q58AIPMT 2006 Prelims · Q147
An important evidence in favour of organic evolution is the occurrence of :
Not quite — the answer is A.
Homologous organs show common ancestry with divergent evolution, and vestigial organs are remnants of organs functional in ancestors; both support organic evolution. Analogous organs come from convergent evolution and do not show common descent.
Q59AIPMT 2006 Prelims · Q148
Which one of the following is not a living fossil ?
Not quite — the answer is C.
Archaeopteryx is an extinct Jurassic fossil bird with reptile features, a connecting link. King crab, Sphenodon and Peripatus are living species that have changed little over long times, i.e. living fossils.
Q60AIPMT 2006 Prelims · Q159
Evolutionary history of an organism is known as :
Not quite — the answer is A.
Phylogeny is the evolutionary history of a species or group. Ontogeny is the development of a single individual from zygote to adult.
Q61AIPMT 2005 Prelims · Q102
There are two opposing views about origin of Modern man. According to one view Homo erectus 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 ?
Not quite — the answer is A.
Mutations pile up over time, so the oldest human population carries the most genetic diversity. Greater DNA (mitochondrial) variation in African populations than in Asian ones shows that humans lived longest in Africa, which points to an African origin. Greater variation in Asia would instead support an Asian origin.
Q62AIPMT 2005 Prelims · Q141
Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution ?
Not quite — the answer is C.
When a pesticide is used, the rare resistant insects survive and reproduce, so resistance spreads through the population. This is natural selection working on existing variation. Transgenics, cloning and stem-cell organs are human technologies, not natural selection.
Q63AIPMT 2005 Prelims · Q146
Which of the following is not true for a species ?
Not quite — the answer is D.
Populations of one species can interbreed, so gene flow does take place between them, and the statement that it does not is false. Interbreeding, variation within the species and reproductive isolation from other species are all true of a biological species.
Q64AIPMT 2005 Prelims · Q150
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 ?
Not quite — the answer is B.
By the Hardy-Weinberg principle, the heterozygote frequency is 2pq = 2 × 0.6 × 0.4 = 0.48. 0.36 (p²) and 0.16 (q²) are the frequencies of the two homozygotes.
Q65AIPMT 2005 Prelims · Q151
Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from non-living matter ?
Not quite — the answer is D.
When the material was heated (sterilised) and sealed off from outside microbes, it did not spoil. This shows that life comes from pre-existing life (Spallanzani/Pasteur-type experiments). Microbes appearing in unsterilised material is exactly what spontaneous generation was wrongly claimed to explain.
Q66AIPMT 2005 Prelims · Q161
de Vries gave his mutation theory on organic evolution while working on :
Not quite — the answer is C.
Hugo de Vries based his mutation theory on sudden large variations he saw in the evening primrose, Oenothera lamarckiana. Drosophila was Morgan's organism and Pisum sativum was Mendel's.
How often Evolution came up
Questions from this chapter in each paper on this site.
- NEET 2021: 2
- NEET 2020: 4
- NEET 2019: 4
- NEET 2018: 3
- NEET 2017: 1
- NEET 2017 (Gujarati paper): 2
- NEET 2016 Phase 2: 4
- NEET 2016 Phase 1: 3
- AIPMT 2015: 3
- AIPMT 2014: 2
- NEET 2013: 4
- AIPMT 2012 Mains: 1
- AIPMT 2012 Prelims: 4
- AIPMT 2011 Prelims: 1
- AIPMT 2010 Mains: 1
- AIPMT 2010 Prelims: 1
- AIPMT 2009 Prelims: 1
- AIPMT 2008 Prelims: 6
- AIPMT 2007 Prelims: 9
- AIPMT 2006 Prelims: 4
- AIPMT 2005 Prelims: 6
Keep going
PYQs show what NEET asks. For the full Evolution bank (642+ questions with solutions), use the RankUp app.
