This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 46 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 46 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. After which event could you say that evolution has occurred? A) A new predator comes into an environment. B) An animal gets fat. C) A white-eyed fly is born into a population of brown-eyed flies. D) An allele frequency changes in a population. Show Answer Correct Answer: D) An allele frequency changes in a population. 2. Individuals with traits that give them a higher probability of surviving and reproducing at a rate greater than other individuals in an environment become more common in the population. What is this part of the evolutionary mechanism called? A) Genetic drift. B) Mutation. C) Gene flow. D) Natural selection. Show Answer Correct Answer: D) Natural selection. 3. A similar bone or organ within many different species of life is a ..... A) Homologous structure. B) Vestigial structure. C) All the above. D) None of the above. Show Answer Correct Answer: A) Homologous structure. 4. Also known as migration, is the transfer of genes (alleles) from one population to another. It occurs when individuals or gametes (reproductive cells) move between populations and interbreed with members of the new population. A) Founder Effect. B) Bottleneck Effect. C) Mutation. D) Gene Flow. Show Answer Correct Answer: D) Gene Flow. 5. What is the result of "Survival of the Fittest" ? A) Evolution (populations change over time). B) Genetic Equilibrium (populations remain unchanged over time). C) All the above. D) None of the above. Show Answer Correct Answer: A) Evolution (populations change over time). 6. Which are two factors that change gene frequencies in a population? A) No mutations and large populations. B) No migrations and no mutations. C) Large populations and random mating. D) Mutations and non random mating. Show Answer Correct Answer: D) Mutations and non random mating. 7. The scientist who first understood that animals change over time to adapt to their environment was A) Socrates. B) Galileo. C) Carolus Linnacus. D) Charles Darwin. Show Answer Correct Answer: D) Charles Darwin. 8. The bottleneck effect and founder effect are results of A) Gene flow. B) Genetic drift. C) Natural selection. D) Non-random mating. E) Mutations. Show Answer Correct Answer: B) Genetic drift. 9. How well an organism survives and reproduces in its environment can be described as its ..... A) Fitness. B) Homologies. C) Common descent. D) Analogies. Show Answer Correct Answer: A) Fitness. 10. If a ..... benefited a tortoise, allowing it to compete for food better than other tortoises, the tortoise lived longer, reproduced more, and passed on its variations to its off spring. A) Food. B) Resource. C) Similarity. D) Variation. Show Answer Correct Answer: D) Variation. 11. Taxonomy is the study of ..... organisms. A) Classifying. B) Dissecting. C) All the above. D) None of the above. Show Answer Correct Answer: A) Classifying. 12. How has antibiotic resistance changed over time? A) It hasn't changed at all. B) Antibiotics are being made cheaply and bacteria are becoming more resistant. C) Humans are buying less antibiotics and becoming weaker. D) Bacteria are becoming more resistant to the antibiotics that are being perscribed. Show Answer Correct Answer: D) Bacteria are becoming more resistant to the antibiotics that are being perscribed. 13. Structures are similar in function but not in anatomical structure A) Vestigial. B) Homologous. C) Analogous Structures. D) Embryonic. Show Answer Correct Answer: C) Analogous Structures. 14. The only taxon that actually exists as a natural unit is A) Species. B) Domain. C) Family. D) Class. Show Answer Correct Answer: A) Species. 15. The wing of a bat and a humans' arm have different functions and appear very different. Yet, the underlying anatomy is basically the same. therefore, these structures are examples of A) Geographic isolation. B) Analogous structures. C) Homology. D) Reproductive isolation. Show Answer Correct Answer: C) Homology. 16. What kinds of rocks hold the most fossils? A) Igneous. B) Aggregate. C) Sedimentary. D) Amber. Show Answer Correct Answer: C) Sedimentary. 17. What is the difference between Homologous and Analogous structures? A) Homologous:same structure, different function.Analogous:same structure, same function. B) Homologous:different structure, same function.Analogous:different function, same structure. C) Homologous:Cladograms, Poly.Analogous:Vial, Friend. D) Homologous:same structure, different function.Analogous:same function, different structure. Show Answer Correct Answer: D) Homologous:same structure, different function.Analogous:same function, different structure. 18. One explanation for the variety of organisms present on Earth today is that over time A) New species have adapted to fill available niches in the environment. B) Evolution has caused the appearance of organisms that are similar to each other. C) Each niche has changed to support a certain variety of organisms. D) The environment has remained unchanged, causing rapid evolution. Show Answer Correct Answer: A) New species have adapted to fill available niches in the environment. 19. It is very common for yellow labs to have bad hips. This is because owners want purebred yellow labs who are good hunting dogs. This is an example of A) Natural Selection. B) Inbreeding. C) Hybridization. D) Fossil Record. Show Answer Correct Answer: B) Inbreeding. 20. In an experiment, scientists observed that bacteria exposed to antibiotics over several generations developed resistance. What does this experiment demonstrate? A) Natural selection. B) Genetic drift. C) Gene flow. D) Artificial selection. Show Answer Correct Answer: A) Natural selection. 21. The groups in a phylogenetic tree are called ..... A) Taxa. B) Nodes. C) Roots. D) Branches. Show Answer Correct Answer: A) Taxa. 22. The statement that "nature selections the most fittest organisms" corresponds who discovery while on the Galapagos Islands? A) Darwin. B) Wallace. C) Lamarck. D) None of the above. Show Answer Correct Answer: A) Darwin. 23. Which one does not increase variation? A) Gene flow. B) Migration. C) Mitosis. D) Crossing Over. Show Answer Correct Answer: C) Mitosis. 24. Analogous Structures A) Structures in different species that have the same function but have evolved separately, thus do not share common ancestor. B) Structures in different species that have the same origin but serve different functions. C) Structures that are similar in function and origin, indicating a common ancestor. D) Structures that are identical in function and structure across all species. Show Answer Correct Answer: A) Structures in different species that have the same function but have evolved separately, thus do not share common ancestor. 25. Which of the following is a basic requirement for natural selection to be an effective evolutionary force? A) Individuals reproduce at a rapid rate. B) Each population must be limited to a large size. C) A population must exhibit no genetic variability. D) None of the above. Show Answer Correct Answer: A) Individuals reproduce at a rapid rate. ← 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