This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 24 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When organisms, whether living or extinct, are descended from a common ancestor ..... this is known as: A) Struggle for Existence. B) Survival of the Fittest. C) Descent with Modification. D) Adaptation. Show Answer Correct Answer: C) Descent with Modification. 2. Genetic variation in a population can be increased with: A) Mutations. B) Genetic drift. C) Founders effect. D) Genetic bottleneck. Show Answer Correct Answer: A) Mutations. 3. How can the Archaeopteryx fossils be used to support the theory of evolution? A) They can demonstrate that animals from long ago are still alive today. B) They show how organisms today share characteristics with fossilized species. C) They give evidence to support the idea that organisms inherit the best traits from their parents. D) They indicate that evolution is a theory because scientists do not completely understand the fossil record. Show Answer Correct Answer: B) They show how organisms today share characteristics with fossilized species. 4. Which kind of a structure is it? A bat's wing and a butterfly's wing? A) Homologous. B) Analogous. C) Vestigial. D) Pharyngeal. Show Answer Correct Answer: B) Analogous. 5. What is a change in a gene pool over time? A) Microevolution. B) Macroevolution. C) Evolution. D) Speciation. Show Answer Correct Answer: A) Microevolution. 6. A human appendix, whale hipbones, and skink's legs are examples of ..... A) Homologous structures. B) Embryonic mates. C) Vestigial organs. D) Analogous structures. Show Answer Correct Answer: C) Vestigial organs. 7. What is a key part of the struggle for survival that leads to evolution? A) Competition. B) Meiosis. C) Cell division. D) None of the above. Show Answer Correct Answer: A) Competition. 8. Which scientific method is used to determine the age of fossils, providing evidence for the timeline of evolution? A) Carbon dating. B) DNA sequencing. C) Radiometric dating. D) Comparative anatomy. Show Answer Correct Answer: C) Radiometric dating. 9. ..... is when the best-adapted organisms survive and reproduce while those with the worse traits do not. A) Natural Selection. B) Artificial Selection. C) Adaptation. D) Mutation. Show Answer Correct Answer: A) Natural Selection. 10. What does Darwin's theory of evolution suggest? A) Species change over time. B) Extinct species are not related to living species. C) Different species can interbreed. D) Animals that look alike are most closely related. Show Answer Correct Answer: A) Species change over time. 11. An organism that is made up of a single cell. A) Multicellular Organism. B) Unicellular Organism. C) Fossil. D) Human Being. Show Answer Correct Answer: B) Unicellular Organism. 12. Introns are significant to biological evolution because A) Their presence allows exons to be shuffled. B) They protect the mRNA from degeneration. C) All the above. D) None of the above. Show Answer Correct Answer: A) Their presence allows exons to be shuffled. 13. According to Darwin's theory of natural selection, the individuals that tend to survive are those that have A) Characteristics their parents acquired by use and disuse. B) Characteristics that plant and animal breeders value. C) The greatest number of offspring. D) Variations best suited to environmental conditions. Show Answer Correct Answer: D) Variations best suited to environmental conditions. 14. What produced oxygen within the early stages of our atmosphere? A) Plants. B) Volcanos. C) Galactic Debris. D) Bacteria. Show Answer Correct Answer: D) Bacteria. 15. Bacteria divide by A) Osmosis. B) Mitosis. C) Meiosis. D) Photosynthesis. Show Answer Correct Answer: B) Mitosis. 16. Treponema Pallidium is what shape A) Spiral. B) Bacillus. C) Coccus. D) Ameoboid. Show Answer Correct Answer: A) Spiral. 17. Adaptation is when ..... A) Plants and animals change themselves. B) Plants and animals stay the same. C) Plants and animals switch places. D) Plants and animals change over generations to better suit an environment. Show Answer Correct Answer: D) Plants and animals change over generations to better suit an environment. 18. Which prediction describes the expected change in antibiotic resistant bacteria in the future? A) There will be more antibiotic resistant bacteria. B) There will be less antibiotic resistant bacteria. C) The amount of antibiotic resistant bacteria will not change. D) There will be a randomly determined amount of antibiotic resistant bacteria. Show Answer Correct Answer: A) There will be more antibiotic resistant bacteria. 19. According to Jean Baptiste Lamarck, how do species change over time? A) Through natural selection. B) By random genetic drift. C) By habitual use or disuse of features. D) Through artificial selection. Show Answer Correct Answer: C) By habitual use or disuse of features. 20. What is the significance of genetic variation in a population for the process of evolution? A) It decreases the likelihood of survival in changing environments. B) It provides the raw material for natural selection to act upon. C) It leads to the extinction of less adapted species. D) It ensures that all individuals in a population are identical. Show Answer Correct Answer: B) It provides the raw material for natural selection to act upon. 21. Which of the following best describes adaptive radiation? A) The evolution of a single species into a variety of forms. B) The gradual change of a species over time. C) The extinction of a species due to environmental changes. D) The process by which unrelated species become more similar. Show Answer Correct Answer: A) The evolution of a single species into a variety of forms. 22. DARWIN COLETED ..... A) ROCKS AND WATER. B) ANIMALS AND PLANTS. C) All the above. D) None of the above. Show Answer Correct Answer: B) ANIMALS AND PLANTS. 23. A common definition for evolution is-Change in allele frequency over time. What does allele frequency mean? (best answer) A) More alleles. B) The allele duplicates into other chromosomes. C) The occurrence of one allele increases in the population. D) All individuals have the same allele. Show Answer Correct Answer: C) The occurrence of one allele increases in the population. 24. Organisms with the Advantageous traits will A) Die and go extinct. B) Survive and reproduce. C) All the above. D) None of the above. Show Answer Correct Answer: B) Survive and reproduce. 25. A mutation in DNA that causes a beneficial characteristic. A) Adaptation. B) Acclimatization. C) All the above. D) None of the above. Show Answer Correct Answer: A) Adaptation. ← 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