This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Studying the development of ..... can also provide scientist with evidence that certain species are related. A) Evolution. B) Nature. C) Ecosystems. D) Embryos. Show Answer Correct Answer: D) Embryos. 2. What is one reason that strawberries are surviving in the winter season? A) They have larger leaves. B) They have genetic variations allowing them to be resistant to cold. C) They reproduce more. D) The color is dark. Show Answer Correct Answer: B) They have genetic variations allowing them to be resistant to cold. 3. Variations of traits that happen WITH humans deciding what is useful: A) Artificial Selection. B) Natural Selection. C) Variations. D) Evolution. Show Answer Correct Answer: A) Artificial Selection. 4. Who is "B. Mac" ? A) Stephen Jay Gould. B) Dr. Sean B. Carroll. C) Thomas Huxley. D) Dr. Barbara McClintock. Show Answer Correct Answer: D) Dr. Barbara McClintock. 5. Example of genetic drift? A) Mutation. B) Bottleneck effect. C) Amish people. D) Natural selection. Show Answer Correct Answer: C) Amish people. 6. Which statement BEST explains why evolution is classified as a theory? A) It is a set of hypotheses supported by scientific findings. B) It has been proved by valid scientific experiments. C) It explains observations more simply than other available models. D) It is accepted by a majority of scientists working in relevant fields,. Show Answer Correct Answer: A) It is a set of hypotheses supported by scientific findings. 7. This theory describes how archaebacteria and eubacteria joined forces to create this larger cell A) Chloroplast. B) Red blood cells. C) Streptococcus. D) Eukaryotes. Show Answer Correct Answer: D) Eukaryotes. 8. Is the unit of study in population genetics. Specifically, ..... is a group of individuals who interbreed among themselves according to a certain system of mating and form a breeding community. These individuals share a common gene pool that is the total genic content of the group. A) Population Genetics. B) Mendelian Population. C) Genetic Drift. D) The Hardy-Weinberg principle of equilibrium. Show Answer Correct Answer: B) Mendelian Population. 9. Which of the following best describes vestigial structures? A) Structures that have no function in modern organisms but were functional in ancestors. B) Structures that are identical in all living organisms. C) Structures that are used for camouflage. D) Structures that are only found in extinct species. Show Answer Correct Answer: A) Structures that have no function in modern organisms but were functional in ancestors. 10. What are the evidences for Evolution? A) Fossil Records. B) Embryology. C) Similar body structure. D) All the above. Show Answer Correct Answer: D) All the above. 11. A physical structure that was fully developed and functional in an earlier group of organisms but is reduced and unused in later species. A) Vein. B) Voluntary Muscle. C) Victory Organ. D) Vestigial Organ. Show Answer Correct Answer: D) Vestigial Organ. 12. Genetically identical plants will produce either pink flowers or blue flowers, depending on the type of soil in which they are planted. What is most likely the explanation for the differences in flower color? A) The flower-color gene is codominant. B) Mutations alter the flower-color gene. C) The flower-color gene is sex-linked. D) Environmental factors affect flower color. Show Answer Correct Answer: D) Environmental factors affect flower color. 13. He is considered the father of taxonomy? A) Charles Darwin. B) Carolus Linnaeus. C) All the above. D) None of the above. Show Answer Correct Answer: B) Carolus Linnaeus. 14. What mechanism of change occurred in the given scenario:There is a population of mice with either black fur or white fur. Their habitat is on dark stone, and mice with white fur were eaten more frequently than the black-furred mice, resulting in the black-furred mice to reproduce at a higher rate. A) Mutation. B) Gene Flow. C) Genetic Drift. D) Natural Selection. Show Answer Correct Answer: D) Natural Selection. 15. Scientists see anatomical and molecular similarities among organisms that suggest that life on Earth began about 4 billion years ago as what type of organism? A) Multicellular organisms. B) Eukaryotic organisms. C) Simple, one-celled organisms. D) Heterotrophic organisms. Show Answer Correct Answer: C) Simple, one-celled organisms. 16. ..... is the process by which populations of organisms with variations that helps them survive in their environments live longer, compete better, and reproduce more than populations that do not have the variations. A) Natural selection. B) Common Ancestor. C) Comparative anatomy. D) Scientific evidence. Show Answer Correct Answer: A) Natural selection. 17. Which of the following scientists was a geologist? A) Hutton. B) Malthus. C) Darwin. D) Wallace. Show Answer Correct Answer: A) Hutton. 18. Whale fins and bat wings are anatomically similar. Which of the following does this suggest about the animals? A) Whales and bats move in the same way. B) Whales and bats have a common ancestry. C) Whales and bats have existed for the same amount of time. D) Whales and bats were once adapted to the same environment. Show Answer Correct Answer: B) Whales and bats have a common ancestry. 19. The fossil record shows that the average size of black bears was large during glacial periods and got smaller during warmer time periods. What is this an example of? A) Directional selection. B) Disruptive selection. C) Ecosystem selection. D) Stabilizing selection. Show Answer Correct Answer: A) Directional selection. 20. Gregor Mendel's pioneering genetic experiments with pea plants occurred before the discovery of the structure and function of chromosomes. Which of the following observations about inheritance in pea plants could Gregor Mendel observe? A) Genotypes. B) Allele frequencies. C) Phenotypes. D) Genetic mutations. Show Answer Correct Answer: C) Phenotypes. 21. The ability of an individual to survive and reproduce in a specific environment is called A) Fitness. B) Common descent. C) Survival of the fittest. D) Struggle for existence. Show Answer Correct Answer: A) Fitness. 22. Which of the following statements is true about genetic drift? A) It is a process that increases genetic variation in large populations. B) It is a random process that can cause changes in allele frequencies in small populations. C) It is a process that only occurs in plants. D) It is a process that always leads to adaptation. Show Answer Correct Answer: B) It is a random process that can cause changes in allele frequencies in small populations. 23. Fungi are like animals because they- A) Have cell walls. B) Contain chitin. C) Are heterotrophic. D) Have filamentous bodies. Show Answer Correct Answer: C) Are heterotrophic. 24. Is a type of genetic mutation that results from the addition or deletion of nucleotides in a DNA sequence that are not in multiples of three. This causes a shift in the reading frame of the gene, which can alter the amino acid sequence of the protein encoded by the gene and lead to a nonfunctional or partially functional protein. A) Transition mutation. B) Transversion mutation. C) Frame-shift mutation. D) Stop mutation. Show Answer Correct Answer: C) Frame-shift mutation. 25. In a population that is in Hardy-Weinberg equilibrium, the frequency of a particular recessive allele a is .4. What is the percentage of the population heterozygous for this allele? A) 4 percent. B) 16 percent. C) 32 percent. D) 48 percent. Show Answer Correct Answer: D) 48 percent. ← 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