This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 15 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The allele frequency of p=.20 What is the frequency of the heterozygous genotype? A) .80. B) .04. C) .32. D) .64. Show Answer Correct Answer: C) .32. 2. This is the variation of living organisms. A) Biological diversity. B) Evolution. C) Environment. D) Natural selection. Show Answer Correct Answer: A) Biological diversity. 3. All vertebrates have this structure which indicates that they are evolved from a distant same ancestor A) A chambered heart. B) Lungs for breathing air. C) Kidneys to clean the blood. D) Pharyngeal Pouches. Show Answer Correct Answer: D) Pharyngeal Pouches. 4. In the essay On population the authors states that this keeps populations in check by killing off the weakest members. A) Evolution. B) Famine and disease. C) All the above. D) None of the above. Show Answer Correct Answer: B) Famine and disease. 5. The process where organisms best fit for the environment are more likely to survive and reproduce. A) Natural selection. B) Adaptation. C) Hibernation. D) Selective breeding. E) Hybridization. Show Answer Correct Answer: A) Natural selection. 6. Using changes in DNA sequences to determine evolutionary changes over time A) Mutation. B) Hox gene. C) Molecular Clock. D) Evo devo. Show Answer Correct Answer: C) Molecular Clock. 7. Which of the following is an example of a keystone species? A) Grass in a savanna. B) Sea otters in a kelp forest. C) Rabbits in a meadow. D) Ants in a rainforest. Show Answer Correct Answer: B) Sea otters in a kelp forest. 8. This term describes a trait shared by organisms with a common ancestor that is similar in structure and function. A) A fossil. B) Sequential. C) Vestigial. D) Homologous. Show Answer Correct Answer: D) Homologous. 9. Which of the following best describes the biological species concept? A) Two organisms are able to breed to produce feeble, sterile offspring. B) Two organisms are unable to breed to produce feeble, sterile offspring. C) Two organisms are able to breed and to produce viable, fertile offspring. D) Two organisms are unable to breed to produce viable, fertile offspring. Show Answer Correct Answer: C) Two organisms are able to breed and to produce viable, fertile offspring. 10. Which of the following is an example of competition among bearded dragons? A) Two bearded dragons basking on the same rock to absorb heat. B) A bearded dragon shedding its skin more frequently in hot weather. C) Bearded dragons spreading their beard to appear larger to predators. D) A bearded dragon digging a burrow to escape the heat. Show Answer Correct Answer: A) Two bearded dragons basking on the same rock to absorb heat. 11. Structures with reduced size and lesser function or no function. A) Homologous Structures. B) Analogous Structures. C) Vestigial Structures. D) None of the above. Show Answer Correct Answer: C) Vestigial Structures. 12. Which of the following is an example of an adaptation that has evolved in response to environmental pressures? A) The development of antibiotic resistance in bacteria. B) The extinction of dinosaurs due to a meteor impact. C) The domestication of dogs from wolves. D) The use of tools by primates. Show Answer Correct Answer: A) The development of antibiotic resistance in bacteria. 13. What's so important about gene duplication? A) A gene needs to be able to segregate during the process of duplication. B) A gene can mutate while the original gene remains unchanged. C) A gene needs to have multiple copies for it to function properly. D) Genes need to be duplicated in order to make new cells. Show Answer Correct Answer: B) A gene can mutate while the original gene remains unchanged. 14. How does gene flow affect population genetics? A) Gene flow only introduces new genetic variations in small populations. B) Gene flow has no effect on genetic variations in populations. C) Gene flow increases genetic differentiation between populations. D) Gene flow introduces new genetic variations and reduces genetic differentiation between populations. Show Answer Correct Answer: D) Gene flow introduces new genetic variations and reduces genetic differentiation between populations. 15. What genetic change allows organisms to survive natural selection in their environments? A) Learned behavior. B) Acquired traits. C) Analogies. D) Adaptations. Show Answer Correct Answer: D) Adaptations. 16. The first cells on Earth were likely to be: A) Amino acids. B) Ribozymes. C) Anaerobic prokaryotes. D) Protobionts. Show Answer Correct Answer: C) Anaerobic prokaryotes. 17. Which of the following is evidence of a common ancestor? A) Vestigial structures. B) Fossil record. C) Similarities in the embryo. D) All of these. Show Answer Correct Answer: D) All of these. 18. If a parent acquires a body structure during its lifetime, it could pass on that characteristic structure to its offspring. A) Theory of Acquired Characteristics. B) Theory of Need. C) Theory of Evolution. D) Theory of Use and Disuse. Show Answer Correct Answer: A) Theory of Acquired Characteristics. 19. Spiders can lay hundreds of eggs at a time, but only a few survive. This is an example of A) Variation and Adaptation. B) The struggle for existence. C) Survival of the fittest. D) None of the above. Show Answer Correct Answer: B) The struggle for existence. 20. In a group of mushrooms exposed to a poisonous chemical, only a few of the mushrooms survived. The best explanation for the resistance of the surviving mushrooms is that the resistance A) Was transmitted to the mushrooms from the poisonous chemical. B) Resulted from the presence of mutations in the mushrooms. C) Was transferred through the food web to the mushrooms. D) Developed in response to the poisonous chemical. Show Answer Correct Answer: B) Resulted from the presence of mutations in the mushrooms. 21. When the DNA of an organism is altered due incorrect copying it is referred to as ..... A) Mutation. B) Variation. C) Genetic Drift. D) Sexual Selection. Show Answer Correct Answer: A) Mutation. 22. Natural selection is the ability to: A) Live longer and reproduce. B) Evolve and survive. C) Mutate and grow. D) Meditate and relax. Show Answer Correct Answer: A) Live longer and reproduce. 23. How would overexposure to X-rays affect most animal cells? A) It would increase cell specialization in organs. B) It would change the sequence of DNA nucleotides in affected cells. C) It would produce new nucleotides for DNA molecules. D) It would cause an increase in red blood cell production. Show Answer Correct Answer: B) It would change the sequence of DNA nucleotides in affected cells. 24. Who had a theory similar to Darwin (struggle for existence)? A) Wallace. B) Lamarck. C) Lyell. D) Malthus. Show Answer Correct Answer: A) Wallace. 25. Distribution of species and ecosystems in geographic space and through geological time A) Biogeography. B) Biology. C) Evolution. D) Adaptation. Show Answer Correct Answer: A) Biogeography. ← 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