This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 51 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 51 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following best describes the concept of adaptive radiation? A) The process by which a single species evolves into multiple distinct species, each adapted to a specific environment. B) The gradual change of a species over time without branching into new species. C) The evolution of similar traits in unrelated species due to similar environmental pressures. D) The extinction of a species due to inability to adapt to environmental changes. Show Answer Correct Answer: A) The process by which a single species evolves into multiple distinct species, each adapted to a specific environment. 2. What is the outcome of genetic change in a population? A) Stagnation of species. B) Evolution and adaptation. C) Immediate extinction. D) No significant impact. Show Answer Correct Answer: B) Evolution and adaptation. 3. Traits, such as human height, that are controlled by more than one gene are known as A) Single-gene traits. B) Polygenic traits. C) Recessive traits. D) Dominant traits. Show Answer Correct Answer: B) Polygenic traits. 4. Only the parrots with the strongest beaks can break the tough nuts of the Amazon. Those with weaker beaks fail to thrive, have less offspring, and eventually die out. This is an example of ..... A) Artificial selection. B) Natural selection. C) All the above. D) None of the above. Show Answer Correct Answer: B) Natural selection. 5. True or False:Darwin was the first scientist who tried to explain evolution. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. When was pangaea starting to form A) Cambrian time period. B) 1 year ago. C) At my house. D) 99999999999. Show Answer Correct Answer: A) Cambrian time period. 7. Population studies on a rat population showed that over time, one allele that used to be dominant, has been replaced with a different dominant allele. This is an example of A) Artificial selection. B) Extinction. C) Phenotype changes. D) Diversity due to predation. Show Answer Correct Answer: C) Phenotype changes. 8. What is the significance of the fossil record in understanding evolutionary biology? A) It provides evidence of the existence of organisms that lived in the past. B) It shows that all species have remained unchanged over time. C) It proves that evolution is a slow and gradual process. D) It demonstrates that extinction events are rare in Earth's history. Show Answer Correct Answer: A) It provides evidence of the existence of organisms that lived in the past. 9. Why is natural selection important for the theory of evolution? A) It keeps evolution from moving too quickly. B) It slows down evolution. C) It is the driving force for evolution. D) It is unrelated to evolution. Show Answer Correct Answer: C) It is the driving force for evolution. 10. Most gene mutations are ..... A) Good because they make organisms stronger. B) They dont affect the species. C) Bad because they make the organism less fit. D) All of them. Show Answer Correct Answer: C) Bad because they make the organism less fit. 11. Evidence that evolution occurs includes all of the following except ..... A) No change has occurred in any species. B) Similarities in proteins and DNA sequences between organisms. C) The fossil record. D) Homologous structures among different organisms. Show Answer Correct Answer: A) No change has occurred in any species. 12. What type of evidence for evolution is provided by the similarity of the forelimbs of whales, bats, and humans? A) Homologous structures. B) Analogous structures. C) Vestigial structures. D) Embryological structures. Show Answer Correct Answer: A) Homologous structures. 13. Which of the following is a vestigial structure in humans? A) Appendix. B) Heart. C) Liver. D) Brain. Show Answer Correct Answer: A) Appendix. 14. Similar structures that suggest evidence of common ancestry A) Analogous structues. B) Homologous structures. C) Vestigial structures. D) Natural Selection. Show Answer Correct Answer: B) Homologous structures. 15. A mutation in which of the following parts of a gene is likely to be most damaging to a cell? A) Intron. B) Exon. C) All the above. D) None of the above. Show Answer Correct Answer: B) Exon. 16. A spider may produce hundreds of eggs, only a few of which may survive. This is an example of ..... A) Genetic change. B) Speciation. C) Overproduction. D) Division. Show Answer Correct Answer: C) Overproduction. 17. In Darwin's exploration throughout Galapagos Island, what particular specie did he make use as a subject for his study? A) Doves. B) Love birds. C) Eagles. D) Finches. Show Answer Correct Answer: D) Finches. 18. Is the evolution of morphological similarities in organisms that are not closely related but they have similarities in their habitats, they have similar environmental demands. A) Coevolution. B) Convergent Evolution. C) Punctuated Equilibrium. D) None of the above. Show Answer Correct Answer: B) Convergent Evolution. 19. While working in distant lands, Wallace sent Darwin a paper he had written. In the paper, Wallace explained his evolutionary theory. This served to confirm what Darwin already thought. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. Which of the following describes natural selection? A) It acts on genetic material directly. B) It acts on existing physical traits. C) It forms new traits. D) It forms new genetic material. Show Answer Correct Answer: B) It acts on existing physical traits. 21. Living species that are closely related share a ..... A) Galapagos tortoise. B) Embryo. C) Two structures. D) Common ancestor. Show Answer Correct Answer: D) Common ancestor. 22. A mutation occurs in a particular animal and quickly begins to increase in frequency throughout the population. Which of the following are you most likely to conclude? A) The mutation makes the animal grow larger. B) The mutation does not confer any benefit or harm to the animal. C) The mutation makes the animal more susceptible to predators. D) The mutation increase the probability that the animal will reproduce. Show Answer Correct Answer: D) The mutation increase the probability that the animal will reproduce. 23. The scientific study of how living things are classified. A) Species. B) Classification. C) Genus. D) Taxonomy. Show Answer Correct Answer: D) Taxonomy. 24. Which of the following species has the most similar DNA to humans? A) Chimpanzees. B) Horses. C) Bacteria. D) Rhinos. E) Dogs. Show Answer Correct Answer: A) Chimpanzees. 25. What was the effect of volcanoes on the Earth's early atmosphere? A) Volcanoes released gases to form the atmosphere. B) Volcanoes released water vapour. C) Volcanoes released gases and water vapour. D) Volcanoes changed the landscape. Show Answer Correct Answer: C) Volcanoes released gases and water vapour. ← 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