NEET UG - Evolution - theories of evolution, speciation, evidences of evolution, adaptive radiation Online Test (MCQ Quiz)

1. Which theory of evolution proposed that acquired characteristics can be inherited?

A) Theory of Natural Selection B) Theory of Punctuated Equilibrium C) Lamarckism D) Synthetic Theory of Evolution

2. Who is credited with proposing the Theory of Natural Selection?

A) Jean-Baptiste Lamarck B) Charles Darwin C) Gregor Mendel D) Alfred Russel Wallace

3. Which of the following is considered a vestigial organ in humans?

A) Appendix B) Heart C) Brain D) Lungs

4. The process by which new species arise is called:

A) Adaptive radiation B) Natural selection C) Speciation D) Genetic drift

5. Which of the following is a direct evidence of evolution from the fossil record?

A) Homologous structures B) Analogous structures C) Transitional fossils D) Embryological similarities

6. The rapid evolution of a single ancestral species into multiple new species, each adapted to a different ecological niche, is known as:

A) Convergent evolution B) Divergent evolution C) Adaptive radiation D) Co-evolution

7. Homologous organs are structures that have:

A) Similar function but different origin B) Different function but similar origin C) Similar function and similar origin D) Different function and different origin

8. Which of the following is an example of adaptive radiation?

A) The evolution of the eye in different animal groups B) The evolution of wings in birds, bats, and insects C) The diversification of Darwin's finches on the Galapagos Islands D) The development of antibiotic resistance in bacteria

9. The study of the geographical distribution of species is called:

A) Paleontology B) Embryology C) Biogeography D) Genetics

10. According to Darwin's theory, variation within a population is:

A) Always beneficial B) Random and non-directional C) Directed by environmental needs D) Acquired during an organism's lifetime

11. Analogous organs are structures that have:

A) Similar function but different origin B) Different function but similar origin C) Similar function and similar origin D) Different function and different origin

12. Which evidence for evolution is based on the similarities in the early stages of development among different vertebrate embryos?

A) Fossil record B) Comparative anatomy C) Embryology D) Biochemistry

13. The concept of 'struggle for existence' in Darwin's theory refers to:

A) Competition for resources, mates, and survival B) The process of natural selection itself C) The development of complex social structures D) The inheritance of acquired traits

14. Speciation that occurs when a population is divided by a geographical barrier is called:

A) Sympatric speciation B) Allopatric speciation C) Parapatric speciation D) Peripatric speciation

15. The wing of a butterfly and the wing of a bat are examples of:

A) Homologous organs B) Analogous organs C) Vestigial organs D) Convergent structures

16. The synthetic theory of evolution incorporates ideas from:

A) Lamarckism and Darwinism B) Darwinism and genetics C) Genetics and paleontology D) Embryology and biogeography

17. Which of the following is a molecular evidence for evolution?

A) Similarities in DNA sequences B) Presence of vestigial organs C) Fossil discoveries D) Embryological development

18. The primary mechanism of evolution according to Darwin's theory is:

A) Genetic drift B) Gene flow C) Natural selection D) Mutation

19. Which of the following is NOT a mode of speciation?

A) Allopatric B) Sympatric C) Parapatric D) Homopatric

20. The study of fossils is called:

A) Genetics B) Paleontology C) Ecology D) Botany

21. Which theory proposes that evolution occurs in rapid bursts followed by long periods of stasis?

A) Gradualism B) Punctuated Equilibrium C) Lamarckism D) Darwinism

22. The forelimbs of a human, a dog, a whale, and a bat show similarities in bone structure despite different functions. This is an example of:

A) Analogous structures B) Convergent evolution C) Homologous structures D) Adaptive radiation

23. Which of the following is a consequence of genetic drift?

A) Adaptation to the environment B) Increased genetic variation C) Loss of genetic variation D) Directional change in allele frequencies

24. The evolution of the horse, with its gradual changes in size and limb structure over millions of years, is a classic example of:

A) Adaptive radiation B) Convergent evolution C) Gradualism D) Speciation

25. The 'survival of the fittest' phrase, coined by Herbert Spencer, was adopted by Darwin to explain:

A) The process of mutation B) The mechanism of natural selection C) The inheritance of acquired characteristics D) The concept of genetic drift

26. Which of the following is a key component of Lamarck's theory of evolution?

A) Natural selection B) Inheritance of acquired traits C) Genetic variation D) Struggle for existence

27. The formation of new species from a single ancestral species in the same geographic area is known as:

A) Allopatric speciation B) Sympatric speciation C) Geographic isolation D) Reproductive isolation

28. The presence of similar genes or DNA sequences in different species is evidence of:

A) Convergent evolution B) Analogous structures C) Common ancestry D) Vestigial organs

29. Which of the following best describes a gene pool?

A) The total number of genes in an individual organism B) The complete set of genes or alleles in a population C) The genes responsible for inherited traits D) The genes that have undergone mutation

30. The process by which unrelated species evolve similar traits due to similar environmental pressures is called:

A) Divergent evolution B) Convergent evolution C) Adaptive radiation D) Co-evolution

31. Which of the following is a pre-zygotic barrier to speciation?

A) Hybrid inviability B) Hybrid sterility C) Mechanical isolation D) Reduced hybrid viability

32. Which of the following is an example of artificial selection?

A) The evolution of antibiotic resistance in bacteria B) The breeding of dogs for specific traits C) The diversification of Darwin's finches D) The development of camouflage in insects

33. The Hardy-Weinberg principle describes a situation where allele frequencies in a population:

A) Are constantly changing B) Remain constant from generation to generation C) Are rapidly decreasing D) Are increasing due to mutation

34. Which of the following is a post-zygotic barrier to speciation?

A) Temporal isolation B) Habitat isolation C) Gametic isolation D) Hybrid breakdown

35. The concept that evolution proceeds by small, gradual changes over long periods is known as:

A) Punctuated equilibrium B) Gradualism C) Saltation D) Catastrophism

36. The observation that different species share common developmental pathways is evidence of:

A) Convergent evolution B) Divergent evolution C) Common ancestry D) Analogous structures

37. Which type of selection favors individuals at one extreme of the phenotypic range?

A) Stabilizing selection B) Directional selection C) Disruptive selection D) Balancing selection

38. The theory of evolution by natural selection was independently conceived by Charles Darwin and:

A) Gregor Mendel B) Alfred Russel Wallace C) Jean-Baptiste Lamarck D) Thomas Malthus

39. Which of the following is a key factor in sympatric speciation?

A) Geographic isolation B) Reproductive isolation without geographic separation C) Migration D) Genetic drift

40. The study of the distribution of species across the globe is known as:

A) Paleontology B) Biogeography C) Ecology D) Geology

41. The process where a species evolves into two or more new species, often due to adaptation to different environments, is called:

A) Convergent evolution B) Divergent evolution C) Co-evolution D) Artificial selection

42. Which of the following is a molecular clock used for?

A) Measuring the rate of speciation B) Estimating the time of divergence between species C) Determining the fitness of a genotype D) Identifying homologous structures

43. The accumulation of small genetic changes in a population over time leads to:

A) Genetic drift B) Speciation C) Gene flow D) Founder effect

44. Which evidence for evolution involves studying the similarities and differences in proteins and DNA among organisms?

A) Fossil record B) Comparative anatomy C) Embryology D) Molecular biology

45. The founder effect is a specific case of:

A) Natural selection B) Gene flow C) Genetic drift D) Mutation

46. Which of the following is an example of a post-zygotic isolating mechanism?

A) Different breeding seasons B) Incompatible reproductive organs C) Hybrid sterility D) Different mating rituals

47. The evolution of the giraffe's long neck is often cited as an example of:

A) Convergent evolution B) Adaptive radiation C) Lamarckian inheritance D) Natural selection

48. Which type of selection favors individuals with intermediate phenotypes, reducing variation?

A) Directional selection B) Disruptive selection C) Stabilizing selection D) Balancing selection

49. The concept that the environment selects for individuals with traits that enhance survival and reproduction is central to:

A) Lamarckism B) Darwinism C) Mendelian genetics D) The theory of evolution by natural selection

50. The study of the similarities in the embryonic development of different species provides evidence for:

A) Convergent evolution B) Common ancestry C) Analogous structures D) Genetic drift

Evolution - theories of evolution, speciation, evidences of evolution, adaptive radiation - Online Test

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