NEET UG · Biology

Evolution

27 practice questions, each with the answer and an explanation.

Practise Evolution now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 27 questions

  1. In the famous Miller-Urey experiment (1953) simulating primitive Earth conditions, which mixture of gases was subjected to electric discharge?
  2. The forelimbs of a human, a cheetah, a whale, and a bat exhibit similar anatomical arrangement of bones (humerus, radius, ulna, carpals, metacarpals) despite performing different functions. This provi…
  3. Which of the following pairs of anatomical structures represents an example of analogous organs formed by convergent evolution?
  4. The industrial melanism observed in the peppered moth (Biston betularia) in England following industrialization provides classic evidence for:
  5. Darwin's finches in the Galápagos Islands, which diversified from a common ancestral seed-eating finch into insectivorous, vegetarian, and cactus-eating species with varied beaks, illustrate:
  6. The striking morphological resemblance between placental mammals and Australian marsupials (such as the placental wolf and Tasmanian wolf, or anteater and numbat) is an outcome of:
  7. According to the Hardy-Weinberg principle, the algebraic expression for the frequencies of three genotypes in a randomly mating diploid population at genetic equilibrium is:
  8. In a population in Hardy-Weinberg equilibrium, the frequency of a recessive allele () is . What is the expected frequency of heterozygous individuals () in this population?
  9. Which type of natural selection operates when environmental pressure favors intermediate phenotypic variants, eliminating individuals with extreme traits and narrowing the phenotypic bell curve?
  10. Hugo de Vries formulated his Mutation Theory of Evolution based on his experiments on which plant?
  11. Genetic drift refers to changes in allele frequencies that occur primarily due to:
  12. When a small group of individuals emigrates from a large parental population and colonizes a new geographical area, their distinct allele frequencies may establish a new species. This evolutionary phe…
  13. Which of the following hominid ancestors had a cranial capacity of approximately , was the first maker of crude stone tools, and probably did not eat meat?
  14. The cranial capacity of Neanderthal man (Homo neanderthalensis), who lived in near-East and central Asia between 100,000 and 40,000 years ago, was approximately:
  15. The discovery of the lobe-finned fish Latimeria (the Coelacanth) off the coast of South Africa in 1938 was of major evolutionary significance because it is a living fossil that represents an ancesto…
  16. Which of the following is considered a vestigial organ in the human body?
  17. Ernst Haeckel's Biogenetic Law ('Ontogeny recapitulates phylogeny') was critically disproved by which embryologist who noted that embryos never pass through the adult stages of other animals?
  18. Which geological era is known as the 'Age of Reptiles' and comprises the Triassic, Jurassic, and Cretaceous periods?
  19. In the evolutionary history of the modern horse (Equus), what was the chronological evolutionary sequence of ancestral genera?
  20. Which hominid ancestor fossils discovered in East Africa and dated to 2–3 million years ago walked fully erect, hunted with stone weapons, but primarily ate fruit?
  21. The sudden re-emergence of an ancestral trait in an individual that has been absent for many generations (such as a human infant born with a short external tail) is known as:
  22. The biological species concept, which defines a species as a group of interbreeding natural populations that are reproductively isolated from other such groups, was formulated by:
  23. Speciation that occurs when a physical geographic barrier (such as a mountain range or ocean) divides a single population into two isolated sub-populations is classified as:
  24. Which radiometric dating method is most appropriate for dating biological organic remains (such as fossil bones and wood) that are less than 50,000 years old?
  25. The widespread evolution of DDT resistance in mosquito populations following prolonged insecticide application is an example of:
  26. A catastrophic flood wipes out of an isolated island rodent population, leaving only 10 survivors that rebuild the population with drastically reduced genetic diversity. This evolutionary event…
  27. Which pre-zygotic reproductive isolating mechanism prevents interbreeding between two sympatric species because they breed at different times of the day or in different seasons?

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