This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 56 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 56 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Having a very high birth weight or a very low birth weight increases the mortality rate of human babies. What type of selection may occur over time? A) Directional selection. B) Disruptive selection. C) Stabilizing selection. D) Artificial selection. Show Answer Correct Answer: C) Stabilizing selection. 2. All answers listed below are true about bacteria except A) All are prokaryotes. B) All are harmful. C) All are unicellular. D) They do not have nucleus. Show Answer Correct Answer: B) All are harmful. 3. A population moving from on place to another. A) Speciation. B) Geographic isolation. C) Genetic drift. D) Migration. Show Answer Correct Answer: D) Migration. 4. What is a common misconception about natural selection? A) It works in nature. B) It benefits all organisms equally. C) It favors the most fit organisms. D) It involves genetic variation. Show Answer Correct Answer: B) It benefits all organisms equally. 5. Change over time; the process by which modern organisms have descended from ancient organisms. A) Evolution. B) Domain. C) Genus. D) Taxonomy. Show Answer Correct Answer: A) Evolution. 6. How does the founder effect influence genetic variation in a new population? A) It increases genetic variation by introducing new alleles. B) It decreases genetic variation due to a small initial population. C) It has no impact on genetic variation. D) It leads to the extinction of the new population. Show Answer Correct Answer: B) It decreases genetic variation due to a small initial population. 7. What kind of a structure is it? An Ostrich's wing A) Homologous. B) Analogous. C) Vestigial. D) Pharyngeal. Show Answer Correct Answer: C) Vestigial. 8. A rather large population of foxes has 555 individuals with tan fur and 390 individuals with red fur. Assume that red is recessive. If you started with q$^{2}$ what do you find next? A) P. B) Q. C) Q$^{2}$. D) P$^{2}$. Show Answer Correct Answer: B) Q. 9. Which gas was introduced by stromatolites and allowed for more complex life to exist on Earth? A) Oxygen. B) Carbon dioxide. C) Sulfur oxides. D) Water vapor. Show Answer Correct Answer: A) Oxygen. 10. What does "survival of the fittest" mean? A) Having a stronger, healthier life. B) Producing offspring. C) Surviving & passing on genes to the next generation. D) None of the above. Show Answer Correct Answer: C) Surviving & passing on genes to the next generation. 11. Refers to the variety of life on Earth, including the number of species, their genetic diversity, and the ecosystems they inhabit. Evolutionary biology helps us understand how this biodiversity has emerged and how it is maintained over time. A) Biodiversity. B) Adaptations. C) Phylogenetics. D) Evolutionary processes. Show Answer Correct Answer: A) Biodiversity. 12. (a) is a key feature of Darwin's theory of evolution. A) Artificial Selection. B) A. Natural Selection. C) Spontaneous Generation. D) Genetic Engineering. Show Answer Correct Answer: B) A. Natural Selection. 13. The idea that species will change over time to form new species. A) Evolution. B) Adaptation. C) Fossil Record. D) Epigenetics. Show Answer Correct Answer: A) Evolution. 14. Which of the following best describes the concept of 'descent with modification'? A) Organisms change during their lifetime and pass these changes to their offspring. B) Species evolve over time, giving rise to new species, while sharing a common ancestor. C) All species remain unchanged over time. D) Species evolve due to random events without any common ancestry. Show Answer Correct Answer: B) Species evolve over time, giving rise to new species, while sharing a common ancestor. 15. Why was Charles Darwin able to offer a large amount of evidence for his theory of evolution by natural selection? A) He conducted in-depth experiments with chemicals in England. B) He collected data for 5 years while traveling around the world. C) He compiled the fossil record. D) He worked with Gregor Mendel for many years collecting genetic proof for evolution. Show Answer Correct Answer: B) He collected data for 5 years while traveling around the world. 16. True or False, in the early history of Earth, there was no oxygen present in the atmosphere A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. What is the main focus of evolutionary theory? A) The study of individual organisms. B) The genetic change in populations over time. C) The classification of species. D) The behavior of animals. Show Answer Correct Answer: B) The genetic change in populations over time. 18. What type of structure is NOT needed for the organism to survive, such as an appendix? A) Vestigal structure. B) Homologous structure. C) Analogous structure. D) None of the above. Show Answer Correct Answer: A) Vestigal structure. 19. Which substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil? A) ATP. B) DNA. C) Iron. D) Oxygen. Show Answer Correct Answer: B) DNA. 20. True or False-Individuals within a population DO evolveShow Answers A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. Structures that have different mature forms, but develop from the same embryonic structure are called ..... structures. A) Darwinian. B) Larmarckian. C) Homologous. D) Fossils. Show Answer Correct Answer: C) Homologous. 22. What is biogeography? A) The study of animal behavior in natural habitats. B) The study of where species are found. C) The study of plant species and their environments. D) The study of geological formations. Show Answer Correct Answer: B) The study of where species are found. 23. A chemical spill causes the offspring of ladybugs to have blue dots instead of black dots. A) Natural Selection. B) Genetic Drift. C) Mutation. D) Gene Flow. Show Answer Correct Answer: C) Mutation. 24. When allelic frequencies remain unchanged, a population is in genetic equilibrium. This statement expresses which of the following? A) A genetic drift. B) Hardy-Weinberg principle. C) Sympatric speciation. D) Prezygotic isolating mechanism. Show Answer Correct Answer: B) Hardy-Weinberg principle. 25. -The process of two closely related parents, or close relatives, who share very similar alleles. Two different species are involved.-Increase the amount of homozygous alleles.-One species involved-Alleles of the offspring are very similar to parents.-High probability of genetic mutation. A) Stabilizing selection. B) Directional selection. C) Hybridization. D) Inbreeding. Show Answer Correct Answer: D) Inbreeding. ← 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