This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When there is a difference in population based on genes, it is said to be a ..... A) Mutation. B) Speciation. C) Extinction. D) Genetic Variation. Show Answer Correct Answer: D) Genetic Variation. 2. Physical separation of a population, leading to speciation. A) Reproductive isolation. B) Geographic isolation. C) Speciation. D) Gene pool. Show Answer Correct Answer: B) Geographic isolation. 3. Circle all that apply:All traits give organisms an advantage. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. If the frequency of recessive allele is 0.2, what is the frequency of the homozygous recessive individuals? A) 0.04. B) 0.16. C) 0.4. D) 0.8. Show Answer Correct Answer: A) 0.04. 5. In the classification hierarchy, which rank comes directly above 'species'? A) Genus. B) Family. C) Order. D) Class. Show Answer Correct Answer: A) Genus. 6. Which term best describes a specially developed characteristic that enables an organism to live in a specific environment? A) Adaptations. B) Natural selection. C) Survival of the fittest. D) Variations. Show Answer Correct Answer: A) Adaptations. 7. The electrical sparks mimicked? A) Heat waves. B) Lightening. C) Volcano. D) Hurricane. Show Answer Correct Answer: B) Lightening. 8. T or F:Adaptations increase the ability for an organism to survive A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Whose extensive travels, particularly in the Galapagos Islands, provided crucial observations and evidence for the theory of evolution by natural selection? A) Albert Einstein. B) Isaac Newton. C) Marie Curie. D) Charles Darwin. Show Answer Correct Answer: D) Charles Darwin. 10. 2)In the reducing atmosphere of earth, ..... was absent. A) Nitrogen. B) Hydrogen. C) Oxygen. D) Ammonia. Show Answer Correct Answer: D) Ammonia. 11. Binomial nomenclature is a 2-name naming system based on A) Family genus. B) Class order. C) Genus species. D) Genus species. Show Answer Correct Answer: C) Genus species. 12. ..... is when a change in allele frequencies as a result of the migration of a small subgroup of a population A) Gene Pool. B) Genetic Drift. C) Bottleneck Effect. D) Isolating Mechanisms. E) Founder Effect. Show Answer Correct Answer: E) Founder Effect. 13. Scientist who proposed the idea of "uniformitarianism" A) Darwin. B) Lamarck. C) Lyell. D) Wallace. Show Answer Correct Answer: C) Lyell. 14. What does natural selection produce change in? A) Species. B) Populations. C) Ecosystems. D) Individuals. Show Answer Correct Answer: B) Populations. 15. Which of the following describes the evidence scientists have collected about the age of the Earth? A) Thousands of years old. B) Hundreds Thousands of years old. C) Millions of years old. D) Billions of years old. Show Answer Correct Answer: D) Billions of years old. 16. Natural selection is known as A) Family descent. B) Survival of the fittest. C) Convergent evolution. D) Divergent evolution. Show Answer Correct Answer: B) Survival of the fittest. 17. This is the pattern of natural selection where BOTH of the extreme versions of a trait are more advantageous than the average, so a population evolves in both directions away from the average A) Directional Selection. B) Disruptive Selection. C) Stabilizing Selection. D) Radical Selection. Show Answer Correct Answer: B) Disruptive Selection. 18. What is the primary mechanism by which new species arise according to the theory of evolution? A) Genetic drift. B) Natural selection. C) Mutation. D) Gene flow. Show Answer Correct Answer: B) Natural selection. 19. ..... is all the genes, including all the different alleles for each gene, that are present in a population at any one time A) Gene Pool. B) Genetic Drift. C) Bottleneck Effect. D) Isolating Mechanisms. E) Founder Effect. Show Answer Correct Answer: A) Gene Pool. 20. Which of the following is an example of convergent evolution? A) Wings of bats and birds. B) Fins of fish and whales. C) Legs of insects and mammals. D) Leaves of trees and shrubs. Show Answer Correct Answer: A) Wings of bats and birds. 21. Basic unit of geologic time scale A) Epoch. B) Era. C) Period. D) Eon. Show Answer Correct Answer: C) Period. 22. What is a trait controlled by only one gene? A) DNA. B) Allele. C) Single-Gene Trait. D) Polygenic Inheritance. Show Answer Correct Answer: C) Single-Gene Trait. 23. Geologic time periods are determined by: A) The origin and extinction of taxa. B) An equal number of years. C) The depth of sediments in rock layers. D) The activity of volcanoes. Show Answer Correct Answer: A) The origin and extinction of taxa. 24. The prefix "halo" such as in halophile most likely means ..... A) Salt. B) High temperatures. C) Self-serving. D) Gram. Show Answer Correct Answer: A) Salt. 25. Which mechanism of change occurs when chance events, rather than fitness, cause a change in the allele frequency of a population? A) Mutation. B) Gene Flow. C) Genetic Drift. D) Natural Selection. Show Answer Correct Answer: C) Genetic Drift. ← 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