This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 49 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Peacock males have evolved to have large and beautiful tales. Long tails are difficult to carry when trying to escape from a predator. However, females, peahens, have been shown to prefer males with longer, more resplendent tales, despite the risks from predation. This is an example of A) Disruptive selection. B) Divergent evolution. C) Sexual selection. D) Geographical isolation. Show Answer Correct Answer: C) Sexual selection. 2. Which one of these is an example of natural selection? A) Size of finches beaks. B) Dog breeding. C) Cattle breeding. D) Hybrid plants. Show Answer Correct Answer: A) Size of finches beaks. 3. Study of the function of the body A) Anatomy. B) Histology. C) Physiology. D) Cytology. Show Answer Correct Answer: C) Physiology. 4. A bird's beak changes over time to fit it's environment. What is this an example of? A) Adaptation. B) Variation. C) Laziness. D) Disease. Show Answer Correct Answer: A) Adaptation. 5. Science says that these can control the activity of a gene A) Proteins. B) Ribosomes. C) Switches. D) Hydrogen bonds. Show Answer Correct Answer: C) Switches. 6. Video Click HereWhat evidence did scientists find to suggest that dinosaurs could be small and quick and not only large and slow? A) The discovery of dinosaurs that could swim. B) The discovery of dinosaurs with armor plates. C) The discovery of dinosaurs that walked on two legs. D) The discovery of fast moving two legged dinosaurs. Show Answer Correct Answer: D) The discovery of fast moving two legged dinosaurs. 7. In an experiment studying the evolution of antibiotic resistance in bacteria, which of the following would be the most likely observation? A) All bacteria die when exposed to antibiotics. B) Some bacteria survive and reproduce, leading to a resistant population. C) Bacteria evolve to become multicellular organisms. D) Antibiotics become less effective due to changes in human cells. Show Answer Correct Answer: B) Some bacteria survive and reproduce, leading to a resistant population. 8. If populations remain reproductively isolated, what process can cause speciation to occur? A) Natural selection. B) Gene editing. C) Selective breeding. D) Genetic imprinting. Show Answer Correct Answer: A) Natural selection. 9. Https://www.youtube.com/watch?v=zK8XGEDcTfo&t=250sWhich statement below is evidence that all tetrapods shared a single common ancestor? A) All tetrapods live partly in water and partly on land. B) All tetrapods are warm-blooded. C) All tetrapod limbs consist of rearranged fish fin rays. D) All tetrapod limbs have a common pattern of one bone, two bones, many bones, then digits. Show Answer Correct Answer: D) All tetrapod limbs have a common pattern of one bone, two bones, many bones, then digits. 10. Who published the book "On the Origin of Species, " which presented the theory of evolution by natural selection and revolutionized the field of biology? A) Marie Curie. B) Isaac Newton. C) Gregor Mendel. D) Charles Darwin. Show Answer Correct Answer: D) Charles Darwin. 11. The differences in sparrow songs among similar species of sparrows is an example of what type of evolution? A) Adaptive. B) Convergent. C) Reproductive. D) Behavioral. Show Answer Correct Answer: D) Behavioral. 12. Which of the following is NOT a domain of life? A) Prokarya. B) Eukarya. C) Eubacteria. D) Archaebacteria. Show Answer Correct Answer: A) Prokarya. 13. Homologous structures are often cited as evidence for evolution. All of the following are examples of homologous structures EXCEPT A) The wings of a bird and with wings of a bat. B) The flippers of a whale and the arms of a man. C) The pectoral fins of a porpoise and the flippers of a seal. D) The forelegs of an insect and the forelimbs of a dog. E) The hind legs of a lizard and the legs of a chicken. Show Answer Correct Answer: D) The forelegs of an insect and the forelimbs of a dog. 14. Which of the following correctly summarizes the physical changes that early humans went through over the past million years or so? A) Brain size increased as jaw size decreased. B) Brain size decreased as jaw size increased. C) Bipedalism increased as use of tools increased. D) Bipedalism decreased as the use of tools increased. Show Answer Correct Answer: A) Brain size increased as jaw size decreased. 15. Is a type of natural selection in which individuals with extreme traits at both ends of a trait distribution have higher fitness and are more likely to survive and reproduce, while individuals with intermediate traits have lower fitness. This can lead to a bimodal distribution of traits in the population, with two distinct peaks representing the extreme traits. A) Stabilizing selection. B) Directional selection. C) Sexual Selection. D) Disruptive Selection. Show Answer Correct Answer: D) Disruptive Selection. 16. Father of evolution A) Darwin. B) Lamarck. C) Lyell. D) Wallace. Show Answer Correct Answer: A) Darwin. 17. What is the most valid way to determine evolutionary relationships? A) DNA & Proteins. B) Homologous Structures. C) RNA & DNA. D) None of the above. Show Answer Correct Answer: A) DNA & Proteins. 18. Individuals within a population can evolve. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 19. Amelia and Malique are studying how speciation and extinction interact to shape biological diversity. What conclusion might they reach? A) Speciation decreases biological diversity. B) Extinction prevents new species from forming. C) Speciation and extinction both contribute to the balance of ecosystems. D) Extinction always leads to a decrease in diversity. Show Answer Correct Answer: C) Speciation and extinction both contribute to the balance of ecosystems. 20. Hemophilia is a sex-linked disease involving the blood clotting mechanisms. It is carried on the X chromosome. Recessive traits are more common in small populations because A) Migration out of the small population is more likely to happen. B) Alleles can randomly mutate in smaller populations. C) A larger population are less likely to have a large genetic variation. D) A smaller population are less likely to have a large genetic variation. Show Answer Correct Answer: D) A smaller population are less likely to have a large genetic variation. 21. Which form of sexual selection uses large physical size and/or weaponry to compete for a female? A) Male-Male Rivalry. B) Female Choice. C) All the above. D) None of the above. Show Answer Correct Answer: A) Male-Male Rivalry. 22. Which of the following is not a step in the formation of the first living cells? A) The biotic synthesis of small organic molecules. B) The packaging of molecules into droplets with membranes that maintained an internal chemistry different from their surroundings. C) The joining of small molecules into macromolecules. D) The origin of self-replicating molecules that eventually made inheritance possible. Show Answer Correct Answer: A) The biotic synthesis of small organic molecules. 23. Which of the following scenarios is an example of adaptive radiation? A) A species of bird migrates to a new island and evolves into several different species, each adapted to a different type of food. B) A population of fish develops a mutation that allows them to survive in polluted water. C) A group of mammals develops thicker fur in response to a colder climate. D) A species of insect becomes extinct due to habitat destruction. Show Answer Correct Answer: A) A species of bird migrates to a new island and evolves into several different species, each adapted to a different type of food. 24. Comparative embryology is? A) Study of adult organisms. B) Focuses on plant development only. C) Comparison of early stages ofdevelopment in different animal species reveals commonevolutionary origins. D) Involves studying fossils. Show Answer Correct Answer: C) Comparison of early stages ofdevelopment in different animal species reveals commonevolutionary origins. 25. A bird's wing, a dolphin's flipper, and a cat's paw are homologous structures. What about these structures supports the theory of evolution? A) They all have similar sizes and functions. B) They are evidence that the animals had a common ancestor. C) They prove that the limbs of all land animals evolved from wings and fins. D) They are good examples of vestigial structures. Show Answer Correct Answer: B) They are evidence that the animals had a common ancestor. ← 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