This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 61 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 61 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is not true of genetic drift? A) It results from the random transmission of alleles from parents to offspring in a population. B) It can lead to alleles being fixed in a population. C) It can increase the genetic diversity of a population. D) It can lead to loss of alleles in a population. Show Answer Correct Answer: C) It can increase the genetic diversity of a population. 2. What have evolved? A) Nonliving things. B) All living things. C) Only humans. D) None of the above. Show Answer Correct Answer: B) All living things. 3. A large population of house flies was sprayed with a newly developed, fast-acting insecticide. The appearance of some houseflies that are resistant to this insecticide supports the concept that A) Species traits tend to remain constant. B) Biocides cause mutations. C) Variation exists within a population. D) The environment does not change. Show Answer Correct Answer: C) Variation exists within a population. 4. A change in structure, behavior, or physiology that enhances survival and reproductive success in a particular environment is called ..... A) Adaptation. B) Mimicry. C) Genetic drift. D) Gene flow. Show Answer Correct Answer: A) Adaptation. 5. The length of time required for half of the radioactive atoms in a sample to decay is its ..... A) Era. B) Age. C) Half-life. D) Eon. Show Answer Correct Answer: C) Half-life. 6. Period characterized by the greatest development, rise of modern insects and flowering plants A) Jurassic. B) Triassic. C) Neogene. D) Cretaceous. Show Answer Correct Answer: D) Cretaceous. 7. Structures that are shared by a related species and have been inherited by a common ancestor. (Same structure, different function) A) Vestigial structure. B) Analogous structure. C) Homologous structure. D) None of the above. Show Answer Correct Answer: C) Homologous structure. 8. Contain rubidium A) RADIUM-STRINTIUM DATING. B) URANIUM-LEAD DATING. C) POTASSIUM-ARGON DATING. D) CARBON-DATING. Show Answer Correct Answer: A) RADIUM-STRINTIUM DATING. 9. When we say that an individual organism has a greater fitness than another individual, we specifically mean that the organism A) Lives longer than others of its species. B) Competes for resources more successfully than others of its species. C) Mates more frequently than others of its species. D) Utilizes resources more efficiently than other species occupying similar niches. E) Leaves more viable offspring than others of its species. Show Answer Correct Answer: E) Leaves more viable offspring than others of its species. 10. The process by which organisms that are most suited to environment survive and reproduce A) Heritable traits. B) Natural Selection. C) Variation. D) None of the above. Show Answer Correct Answer: B) Natural Selection. 11. What is the "Beagle" ? A) A gene. B) A mutation. C) Darwin's research ship. D) Dr. Carroll's Book. Show Answer Correct Answer: C) Darwin's research ship. 12. Remains of ancient organisms preserved in the earth's crust are called A) Extinctions. B) Fossils. C) Mutations. D) Variations. Show Answer Correct Answer: B) Fossils. 13. When only the fittest organisms survive & reproduce ..... this is known as: A) Struggle for Existence. B) Survival of the Fittest. C) Descent with Modification. D) Adaptation. Show Answer Correct Answer: B) Survival of the Fittest. 14. Charles Darwin's observation that finches of different species on the Galapagos Islands have many similar physical characteristics supports the hypothesis that these finches- A) Have the ability to interbreed. B) Acquired traits through use and disuse. C) All eat the same type of food. D) Descended from a common ancestor. Show Answer Correct Answer: D) Descended from a common ancestor. 15. What role does genetic variation play in the evolution of species? A) It reduces the chance that species will possess characteristics well-suited for a changing environment. B) It increases the chance that species will possess characteristics well-suited for a changing environment. C) It allows multicellular organisms to change their traits during their lifetimes. D) It allows unicellular organisms to change their DNA after they die. Show Answer Correct Answer: B) It increases the chance that species will possess characteristics well-suited for a changing environment. 16. What is the bottleneck effect in evolutionary biology? A) A sharp reduction in the size of a population due to environmental events or human activities. B) The gradual increase in population size over time. C) The process by which new species are formed. D) The adaptation of organisms to their environment. Show Answer Correct Answer: A) A sharp reduction in the size of a population due to environmental events or human activities. 17. A population of animals is permanently split by a natural barrier into two separate populations in different environments. What will likely result after a long period of time? A) The evolution of the two populations will be identical. B) The production of variation will stop in the two populations. C) The two population will evolve into separate species. D) Autotrophic nutrition will replace heterotrophic nutrition in the two populations. Show Answer Correct Answer: C) The two population will evolve into separate species. 18. Which two processes result in variations that commonly influence the evolution of sexually reproducing species? A) Mutations and genetic recombination. B) Mitosis and natural selection. C) Extinction and gene replacement. D) Environmental selection and selective breeding. Show Answer Correct Answer: A) Mutations and genetic recombination. 19. The plant O. lamarckiana was studied by ..... A) Lamarck. B) Mendel. C) Darwin. D) De Vries. Show Answer Correct Answer: D) De Vries. 20. Darwin proposed that all species, living and extinct, are descended from monkeys A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. When using a dichotomous key to identify organisms, what do we look at? A) Physical features. B) Weather patterns. C) Environment. D) Diet. Show Answer Correct Answer: A) Physical features. 22. A cause of artificial selection is ..... A) Environment factors. B) Human selection. C) Mutation. D) Gene manipulation. Show Answer Correct Answer: B) Human selection. 23. The sum of all of the genetic traits in a population's individuals at any given time is known as the ..... A) Gene pool. B) Genetic drift. C) Bottleneck effect. D) Founder effect. Show Answer Correct Answer: A) Gene pool. 24. Which of the following statements explains Lamarkc, s Theory of Use and Disuse? A) Body structures develop because of mutation. B) Body structures develop because they are not in use. C) Body structures develop because of competition. D) Body structures develop because they are used extensively. Show Answer Correct Answer: D) Body structures develop because they are used extensively. 25. Biologists discover two rabbit species living on opposite sides of a large river. What could they do to test and see if these species came from a common ancestor? A) Compare DNA sequences. B) Compare body structures. C) Compare protein sequences. D) All of these. Show Answer Correct Answer: D) All of these. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 7 Evolution Quiz 1Class 12 Biology Chapter 7 Evolution Quiz 2Class 12 Biology Chapter 7 Evolution Quiz 3Class 12 Biology Chapter 7 Evolution Quiz 4Class 12 Biology Chapter 7 Evolution Quiz 5Class 12 Biology Chapter 7 Evolution Quiz 6Class 12 Biology Chapter 7 Evolution Quiz 7Class 12 Biology Chapter 7 Evolution Quiz 8Class 12 Biology Chapter 7 Evolution Quiz 9Class 12 Biology Chapter 7 Evolution Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books