This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A method of blending into an environment. A) Fitness. B) Variation. C) Extinction. D) Camoflauge. Show Answer Correct Answer: D) Camoflauge. 2. What was the main evidence the Linnaean classification system used to classify organisms? A) DNA. B) Obvious physical traits. C) All the above. D) None of the above. Show Answer Correct Answer: B) Obvious physical traits. 3. Which of these are true of the first horses? A) The first horses were the size of a modern pony. and lived in the desert. B) The first horses probably ate soft leaves and had four long toes. C) All the above. D) None of the above. Show Answer Correct Answer: B) The first horses probably ate soft leaves and had four long toes. 4. What gave Charles Darwin the idea of evolution? A) Google. B) Wikipedia. C) Mans attempt to destroy mankind. D) Finches in the Galapagos island. Show Answer Correct Answer: D) Finches in the Galapagos island. 5. A feature that a species inherited from an ancestor but that is now less elaborate and functional than in the ancestor A) Vesigial Structure. B) Analogous Structure. C) Homologous structure. D) Evolution. Show Answer Correct Answer: A) Vesigial Structure. 6. The "oxygen revolution" had an enormous impact on life, and likely A) Provided the proper environment for packaging molecules into "protobionts". B) Caused RNA molecules with certain base sequences to become more stable and replicate faster. C) Caused the extinction of many prokaryotic groups due to the rising concentration of O$_{2 }$. D) Resulted from the sudden appearance of animals in the next time period. Show Answer Correct Answer: C) Caused the extinction of many prokaryotic groups due to the rising concentration of O$_{2 }$. 7. The country of Sweden is known for having people with blonde hair and blue eyes. One day a family moves from Sweden to India where dark hair and dark eyes are very common. A female from Sweden marries a male from India and their offspring now have blonde hair and blue eyed traits. A) Natural Selection. B) Mutation. C) Non-Random Mating. D) Gene Flow. Show Answer Correct Answer: D) Gene Flow. 8. What determines if a trait is helpful or harmful? A) Environment. B) Species. C) Population. D) None of the above. Show Answer Correct Answer: A) Environment. 9. Organisms choose to adapt to survive. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. ..... is change over time; the process by which a modern organisms have descended from ancient organisms A) Evolution. B) Fossil. C) Adaptation. D) Fitness. E) Natural Selection. Show Answer Correct Answer: A) Evolution. 11. For the formation of chemical compounds, in the prebiotic atmosphere of the energy from ..... source was not available. A) U.V. Radiation. B) A.T.P. C) Lightning. D) Radiating heat from the centre of the earth. Show Answer Correct Answer: B) A.T.P. 12. Which of the following reproductive barriers occurs after two different species mate? A) Behavioral isolation. B) Gametic isolation. C) Habitat isolation. D) Mechanical isolation. Show Answer Correct Answer: B) Gametic isolation. 13. What are analogous structures in the context of convergent evolution? A) They are structures that perform similar functions but do not share a common ancestor, they arise from convergent evolution. B) They are structures that arise from divergent evolution. C) They are structures that share a common ancestor but perform different functions. D) They are structures that have no relation to convergent evolution. Show Answer Correct Answer: A) They are structures that perform similar functions but do not share a common ancestor, they arise from convergent evolution. 14. What is a group of organisms of the same species that live in the same area and can interbreed? A) Ecosystem. B) Organism. C) Population. D) Species. Show Answer Correct Answer: C) Population. 15. The differences in sparrow songs among sympatric species of sparrows are examples of A) Geographic isolation. B) Convergent evolution. C) Behavioral isolation. D) Mechanical isolation. Show Answer Correct Answer: C) Behavioral isolation. 16. Scientists find that most feral cats in a neighborhood have whiskers about 12 cm long. After about 15 generations of stabilizing selection, what would you expect to see? A) Even more cats with 12 cm long whiskers. B) Most cats with less than 12 cm long whiskers. C) Most cats with more than 12 cm long whiskers. D) Most cats with whiskers either less than or more than 12 cm long, very few with whiskers 12 cms. Show Answer Correct Answer: A) Even more cats with 12 cm long whiskers. 17. Which scientist sent their findings to Charles Darwin, who he mentioned in the beginning of his book. A) Jean-Baptist Lamarck. B) Alfred Russel Wallace. C) All the above. D) None of the above. Show Answer Correct Answer: B) Alfred Russel Wallace. 18. What were the earliest living things on Earth? A) Humans. B) Primates. C) Microscopic organisms. D) None of the above. Show Answer Correct Answer: C) Microscopic organisms. 19. What are molecular biology? A) Evolutionary relationshipsamong species can bedetermined by comparinggenes and proteins ofdifferent organisms. B) Molecular biology is the study of culinary arts. C) Molecular biology is the study of ancient civilizations. D) Molecular biology is the study of celestial bodies. Show Answer Correct Answer: A) Evolutionary relationshipsamong species can bedetermined by comparinggenes and proteins ofdifferent organisms. 20. Which of the following is the correct sequence of geologic time from smallest to largest unit? A) Era, eon, period, and epoch. B) Epoch, eon, era, and period. C) Epoch, period, era, and eon. D) Era, eon, epoch, and period. Show Answer Correct Answer: C) Epoch, period, era, and eon. 21. What is it called when different species evolve similar characteristics because of their habitat? A) Divergent Evolution. B) Speciation. C) Convergent Evolution. D) Genetic Variation. Show Answer Correct Answer: C) Convergent Evolution. 22. Tetrapods (4 limbs) have very similar bone structures. This leads biologists to believe: A) They all had a common ancestor. B) Their common ancestor was probably a lamprey. C) Their limbs are convergent evolution. D) None of the above. Show Answer Correct Answer: A) They all had a common ancestor. 23. Which BEST helps a population from going extinct? A) Low mutation rate. B) Small population. C) Genetic variation. D) Similar physical features. Show Answer Correct Answer: C) Genetic variation. 24. Which of these is the best definition of biogeography? A) The study of how and why plants and animals live where they do. B) The study of how and why plants affect each other and the environment. C) All the above. D) None of the above. Show Answer Correct Answer: A) The study of how and why plants and animals live where they do. 25. What role do mutations play in evolution? A) They introduce genetic variation. B) They eliminate harmful traits. C) They stabilize existing traits. D) They prevent natural selection. Show Answer Correct Answer: A) They introduce genetic variation. ← 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