This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 44 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 44 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. By studying the fossil record extensively, Darwin discovered that ..... A) Species change throughout time. B) Whales used to be land animals. C) Ancient species are related to modern species. D) All of the above. Show Answer Correct Answer: D) All of the above. 2. Which statement describes the best evidence that two species share a recent common ancestor? A) The species are about the same size. B) The species eat the same type of food. C) The species live in the same ecosystem. D) The species have similar DNA sequences. Show Answer Correct Answer: D) The species have similar DNA sequences. 3. What is an example of evolution observable in modern times? A) The development of technology. B) The domestication of animals. C) Antibiotic resistance in bacteria. D) The growth of human population. Show Answer Correct Answer: C) Antibiotic resistance in bacteria. 4. Molecular Evidence is found in ..... A) Molecules. B) RNA. C) DNA. D) Bones. Show Answer Correct Answer: C) DNA. 5. The poison in the skin of a frog is an example of a ..... adaptation A) Behavioral. B) Structural. C) Physiological. D) None of the above. Show Answer Correct Answer: C) Physiological. 6. Comparing two individuals of a species, evolutionary "fitness" would be best measured by which of the following? A) The length and width of the individuals. B) The number of offspring. C) The mass of the food eaten in its life. D) The mass of the individuals. Show Answer Correct Answer: B) The number of offspring. 7. Https://www.youtube.com/watch?v=zK8XGEDcTfo&t=250sWhich of the following features describe Tiktaalik? i. Long Neck ii. Lungs iii. Round head and Snout iv. Armlike Fins A) I, II, III. B) I, II, IV. C) I, III. D) II, III, IV. Show Answer Correct Answer: B) I, II, IV. 8. When more offspring are being produced, there is a competition of limited resources ..... this is known as: A) Struggle for Existence. B) Survival of the Fittest. C) Descent with Modification. D) Adaptation. Show Answer Correct Answer: A) Struggle for Existence. 9. In Darwin's day, most people believed the earth was ..... years old. A) 6000. B) 6 billion. C) All the above. D) None of the above. Show Answer Correct Answer: A) 6000. 10. What is a change in a gene pool due to separation of a small population from a larger population? A) Bottleneck Effect. B) Founder Effect. C) Separation Effect. D) Emigration Effect. Show Answer Correct Answer: B) Founder Effect. 11. Postzygotic isolation involves the inability of ..... between two species to reproduce. A) Hybrids. B) Subspecies. C) Males. D) Genes. Show Answer Correct Answer: A) Hybrids. 12. Occurs when a population experiences a dramatic reduction in size, leading to a loss of genetic diversity due to random fluctuations in allele frequencies. A) Founder Effect. B) Bottleneck Effect. C) Mutation. D) Gene Flow. Show Answer Correct Answer: B) Bottleneck Effect. 13. Evolution is a scientific fact. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. Darwin thought all the Galapagos tortoises shared a ..... that came to one of the islands millions of years ago. A) Naturalist. B) Limited resource. C) Common ancestor. D) Biotic factor. Show Answer Correct Answer: C) Common ancestor. 15. Mimicry is A) Long Time evolutionary events. B) Short time evolutionary events. C) Mistakes in the genetic code. D) When an organism looks very similar win physical resemblance to other objects. Show Answer Correct Answer: D) When an organism looks very similar win physical resemblance to other objects. 16. What type of reproductive barrier separates species because one mates at dawn and the other at dusk? A) Habitat Isolation. B) Behavioral Isolation. C) Temporal Isolation. D) Embryo Isolation. Show Answer Correct Answer: C) Temporal Isolation. 17. The process in which an animal cannot reproduce any more and dies out is known as ..... A) Speciation. B) Extinction. C) Evolution. D) Natural Selection. Show Answer Correct Answer: B) Extinction. 18. Which of the following best explains the bottleneck effect? A) A significant reduction in population size. B) The introduction of new species. C) The formation of new genetic material. D) The increase in population diversity. Show Answer Correct Answer: A) A significant reduction in population size. 19. What is a cast? A) The impression of an organism. B) Occurs when the last individual organism of a species dies. C) Is made up of all the fossils ever discovered on Earth. D) A fossil copy of an organism in a rock. Show Answer Correct Answer: D) A fossil copy of an organism in a rock. 20. During a biology class, Mark and Amelia were discussing how mutations affect the formation of new species. What role do mutations play in the process of speciation? A) They eliminate genetic diversity. B) They introduce new genetic variations. C) They prevent species from adapting. D) They always lead to extinction. Show Answer Correct Answer: B) They introduce new genetic variations. 21. A common definition for evolution is-Change in allele frequency over time. What does time mean? (best answer) A) 1000s of years. B) Any amount of time from1 year to 1 million years. C) Many Generations. D) A watch. Show Answer Correct Answer: C) Many Generations. 22. Geologic subdivisions A) Epoch. B) Era. C) Period. D) Eon. Show Answer Correct Answer: A) Epoch. 23. ..... :Structures shared by 2 or more different species due to common ancestry. A) Homologous structures. B) Analogous Structures. C) Vestigial Structures. D) Divergent structure. Show Answer Correct Answer: A) Homologous structures. 24. The struggle for existence against other members of an organisms species is A) Competition. B) Natural Selection. C) Gene flow. D) Genetic drift. Show Answer Correct Answer: A) Competition. 25. Which of the following pieces of evolution evidence deals with comparing similar structures in various species? A) Fossil record. B) Comparing embryology. C) Comparing biochemistry. D) Comparing anatomy. Show Answer Correct Answer: D) Comparing anatomy. ← 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