This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following best describes the concept of natural selection in the theory of evolution? A) The process by which organisms with favorable traits are more likely to survive and reproduce. B) The random change in allele frequencies in a population over time. C) The movement of individuals into or out of a population. D) The formation of new species from existing species. Show Answer Correct Answer: A) The process by which organisms with favorable traits are more likely to survive and reproduce. 2. Are features or traits that reappear in an organism after being absent for several generations due to the process of evolution. Atavistic structures are sometimes also referred to as "throwback" features, because they represent a return to an earlier ancestral form. A) Comparative Anatomy. B) Comparative Embryology. C) Atavistic Structures. D) Vestigial structures. Show Answer Correct Answer: C) Atavistic Structures. 3. What does overproduction refer to in evolutionary biology? A) The excessive use of resources by an organism. B) The production of more offspring than can possibly survive. C) The increase in size of an organism over its lifetime. D) The rapid growth of a population in an ecosystem. Show Answer Correct Answer: B) The production of more offspring than can possibly survive. 4. An example of an analogous structure includes: A) Wing of a butterfly and bird wing. B) Bird wing and human arm. C) Rat appendix and human appendix. D) None of the above. Show Answer Correct Answer: A) Wing of a butterfly and bird wing. 5. Conjugation occurs when ..... A) None of these. B) A virus injects DNA into the bacterium. C) A plasmid is transferred from one bacteria to another. D) Bacteria take up DNA from the environment. Show Answer Correct Answer: C) A plasmid is transferred from one bacteria to another. 6. How does the removal of a keystone species affect an ecosystem? A) It leads to the extinction of all species in the ecosystem. B) It causes a minor change in the ecosystem dynamics. C) It can lead to significant changes in the population sizes of other species. D) It has no effect on the ecosystem. Show Answer Correct Answer: C) It can lead to significant changes in the population sizes of other species. 7. This is a process in which organisms gradually change over time. A) Environment. B) Competition. C) Evolution. D) Fossils. Show Answer Correct Answer: C) Evolution. 8. The evolution of one species into two or more species as a result of different populations becoming reproductively isolated from each other is: A) Reproductive selection. B) Adaptive radiation. C) Artificial selection. D) Independent assortment. Show Answer Correct Answer: B) Adaptive radiation. 9. What mechanism of change occurs when certain traits makes an organism more fit, allowing their traits to be passed on? A) Mutation. B) Gene Flow. C) Genetic Drift. D) Natural Selection. Show Answer Correct Answer: D) Natural Selection. 10. Populations of all species are limited by ..... A) Genetic change, speciation, adaptation, and separation. B) Starvation, disease, competition, and predation. C) Natural selection, evolution, and division. D) Breeding, selection, sediment, and ancestry. Show Answer Correct Answer: B) Starvation, disease, competition, and predation. 11. Which of the following statement about fossils is FALSE? A) Fossils from the deeper layers are the ancestors of current forms. B) Fossils from the upper layers are the ancestors of modern forms. C) Fossils from the uppermost rock are most like current forms. D) Fossils are remains of ancient organisms. Show Answer Correct Answer: B) Fossils from the upper layers are the ancestors of modern forms. 12. The combined genetic information of all members of a particular population forms a A) Gene pool. B) Niche. C) Phenotype. D) Population. Show Answer Correct Answer: A) Gene pool. 13. Which scientist visited the Galapagos Islands and came up with the theory of natural selection? A) Theodor Schwann. B) Gregor Mendel. C) Charles Darwin. D) Rudolf Virchow. Show Answer Correct Answer: C) Charles Darwin. 14. Describes a group of living things that are no longer living. A) Fossil. B) Extinct. C) Endangered. D) Dinosaur. Show Answer Correct Answer: B) Extinct. 15. Adaptations that result from natural selection are expected to increase the fitness of an organism. In terms of natural selection, which of the following best describes fitness? A) Being able to escape from predators. B) Being among the strongest organisms in a population. C) Being able to survive, find a mate, and produce offspring. D) Being able to survive long enough to reach the adult stage. Show Answer Correct Answer: C) Being able to survive, find a mate, and produce offspring. 16. What do you call someone who has been shown to be related: A) A common ancestor. B) Evolution. C) Adaptation. D) Natural selection. Show Answer Correct Answer: A) A common ancestor. 17. He proposed a Theory of Evolution based on Natural Selection. A) Jean Baptiste De Lamarck. B) Jean Baptiste De La Salle. C) Charles Darwin. D) Charles Marvin. Show Answer Correct Answer: C) Charles Darwin. 18. The population of peppered moths in England changed from white to black in 50 years A) Stabilizing selection. B) Sexual selection. C) Directional selection. D) Disruptive selection. Show Answer Correct Answer: C) Directional selection. 19. What is suggested by the anatomical similarity of different species of vertebrates? A) No evolutionary relationships between the groups. B) Recent common ancestry. C) Similar environments in the past. D) Evolution from a distant common ancestor. Show Answer Correct Answer: D) Evolution from a distant common ancestor. 20. The structures of the front flipper of a whale and the forearm of a wolf have similar bone structure and derive from a common ancestor. This is an example of ..... A) Analogous structures. B) Homologous structures. C) Vestigial structures. D) None of these. Show Answer Correct Answer: B) Homologous structures. 21. In Canada, the people have overfished the salmon in a particular river. They catch the larger salmon and throw the smaller salmon back into the river. Over time, what type of selection is likely to take place? A) Directional selection. B) Disruptive selection. C) Stabilizing selection. D) Artificial selection. Show Answer Correct Answer: A) Directional selection. 22. ..... are the structures that are similar in different species of common ancestry A) Homologous Structure. B) Analogous Structure. C) Vestigial Structure. D) Speciation. E) Allele Frequency. Show Answer Correct Answer: A) Homologous Structure. 23. Which of the following scientists did not influence Darwin? A) Mendel. B) Lamarck. C) Malthus. D) Lyell. Show Answer Correct Answer: A) Mendel. 24. Four species of animals were studied. Four traits of these animals were compared. The following data was gathered. Organism 1&2 shared 2 traits. Organism 1&3 shared 3 traits. Organism 2&3 shared 1 trait and organism 2&4 shared 4 traits. Using this data, which organisms are the closet in relations to each other? A) Organism 2&4. B) Organism 3&1. C) Organism 2&3. D) Organism 1&2. Show Answer Correct Answer: C) Organism 2&3. 25. What type of evidence for evolution is represented by the examination of similarities in the early developmental stages of different organisms? A) Fossil record. B) Molecular biology. C) Comparative embryology. D) Comparative anatomy. Show Answer Correct Answer: C) Comparative embryology. ← 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