This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 7 Evolution – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 20 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the result of selective breeding in plants of the genus Brassica? A) Increased leaf size. B) Resistance to pests. C) Faster growth rate. D) Different foods from plant components. Show Answer Correct Answer: D) Different foods from plant components. 2. Which of the following best explains why migration beneficial to populations of the same species? A) New individuals can contribute new and different genes. B) Populations will have less competition for resources. C) More organisms can acquire territory. D) None of the above. Show Answer Correct Answer: A) New individuals can contribute new and different genes. 3. Which is not true of Protista? A) Some are heterotrophs. B) They do not have internal membranes. C) Some are autotrophs. D) Paramecium are an example. Show Answer Correct Answer: B) They do not have internal membranes. 4. The appendix, tailbone, and wisdom teeth are all examples of what type of structure in humans? A) Analogous. B) Homologous. C) Vestigial. D) Modern. Show Answer Correct Answer: C) Vestigial. 5. A process of 2 or more species becoming more and more dissimilar. A) Convergent Evolution. B) Divergent Evolution. C) Coevolution. D) None of the above. Show Answer Correct Answer: B) Divergent Evolution. 6. Ostriches are birds that cannot fly, their wings are examples of A) Adaptations. B) Vestigial structures. C) Homologous structures. D) Traits. Show Answer Correct Answer: B) Vestigial structures. 7. According to Darwin's theory of natural selection, individuals who survive are the ones best adapted for their environment. Their survival is due to the ..... A) Possession of adaptations developed through use. B) Possession of inherited adaptations that maximize fitness. C) Lack of competition within the species. D) Choices made by plant and animal breeders. Show Answer Correct Answer: B) Possession of inherited adaptations that maximize fitness. 8. What is the evolutionary theory which suggests that macroevolution resulted from random "good mutations." A) Punctuated equilibrium. B) Darwinism. C) Neo-Darwinism. D) Microevolution. Show Answer Correct Answer: C) Neo-Darwinism. 9. Darwin's finch beaks are an example of A) Founder effect. B) Adaptive radiation. C) Divergent evolution. D) Convergent evolution. Show Answer Correct Answer: B) Adaptive radiation. 10. Genetic variation A) Is accomplished with animals and plants breed outside their gene pool introducing new genes. B) Is accomplished when plants and animals breed within their gene pool keeping genes the same. C) All the above. D) None of the above. Show Answer Correct Answer: A) Is accomplished with animals and plants breed outside their gene pool introducing new genes. 11. Which of the following places the geologic time eras in order from oldest to most recent? A) Cenozoic, Mesozoic, Paleozoic, Precambrian. B) Mesozoic, Cenozoic, Paleozoic, Precambrian. C) Precambrian, Paleozoic, Mesozoic, Cenozoic. D) Precambrian, Cenozoic, Paleozoic, Mesozoic. Show Answer Correct Answer: C) Precambrian, Paleozoic, Mesozoic, Cenozoic. 12. The half-life of Carbon-14 is 5730 years. How old is a dinosaur bone when 12.5% of Carbon-14 remains? A) 11460 years. B) 5730 years. C) 22920 years. D) 17190 years. Show Answer Correct Answer: D) 17190 years. 13. This scientist stated that by using or not using a certain body part, organisms could change in their lifetime and that the trait gained would be passed down to their offspring. A) James Hutton. B) Jean-Baptiste Lamarck. C) Charles Lyell. D) Thomas Malthus. Show Answer Correct Answer: B) Jean-Baptiste Lamarck. 14. Which of the following is not a force that drives evolution? A) Predation. B) Gene Flow a.k.a Migration. C) Mutation. D) Genetic Drift. Show Answer Correct Answer: A) Predation. 15. Match each kingdom with it's domain.archaebacteria A) Eukarya. B) Archaea. C) Bacteria. D) None of the above. Show Answer Correct Answer: B) Archaea. 16. The field of biology that classifies organisms is called ..... A) Paleontology. B) Phylogeny. C) Embryology. D) Taxonomy. Show Answer Correct Answer: D) Taxonomy. 17. What is is the study of how and why plants and animals live where they do? A) Adaptive Radiation. B) Biogeology. C) Evolution. D) Biogeography. Show Answer Correct Answer: D) Biogeography. 18. Over time, a species may change behavior or physical appearance in response to changes in the environment. This ..... helps organisms to survive better in the environment. A) Adaptation. B) Genetic variation. C) Resistance. D) Genetic change. Show Answer Correct Answer: A) Adaptation. 19. Scientist who studied corn genetics and discovered that genes can move and become active/inactive A) Thomas Huxley. B) Barbara McClintock. C) Eric Davidson. D) Charles Darwin. Show Answer Correct Answer: B) Barbara McClintock. 20. Structures that are inherited from a common ancestor are homologous. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. In the Hardy Weinberg Principle, what does 2pq$^{ }$stand for? A) Expected frequency of homozygous dominant genotype. B) Expected frequency of heterozygous genotype. C) Expected frequency of homozygous recessive genotype. D) None of the above. Show Answer Correct Answer: B) Expected frequency of heterozygous genotype. 22. Two allopatric species of sparrows have very similar niches when compared to two sympatric species of sparrows. What would be a good explanation for this? A) The allopatric species have no competition with one another so therefore can occupy similar niches. B) The sympatric species are usually mechanically isolated from one another. C) The sympatric species diverged from a common ancestor. D) The allopatric species are behaviorally isolated from one another. Show Answer Correct Answer: A) The allopatric species have no competition with one another so therefore can occupy similar niches. 23. Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this? A) The function of these bones is the same in all animals. B) They live in similar environments. C) They have a common ancestor. D) All organisms resemble humans. Show Answer Correct Answer: C) They have a common ancestor. 24. The study of evolution by studying the development of the fertilized egg cell and its development into an organism is called A) Embryology. B) Evolution. C) Molecular Biology. D) Paleontology. Show Answer Correct Answer: A) Embryology. 25. In a food web, what is the primary function of a keystone species? A) To provide energy to all other species. B) To control the population of prey species. C) To decompose organic matter. D) To produce oxygen through photosynthesis. Show Answer Correct Answer: B) To control the population of prey species. 26. Artificial selection is a result of A) Mutation. B) The environment. C) Human behavior. D) Gene Flow. Show Answer Correct Answer: C) Human behavior. 27. Natural selection causes individuals to change their traits. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 28. Parrot P has a larger bill than other parrots of the same species. When Parrot P breeds, some of its offspring also have larger bills. Parrot P's large bill is most likely the result of A) A mutation. B) A change in diet. C) Inheritance of an acquired habit. D) Natural selection. Show Answer Correct Answer: A) A mutation. 29. What type of evidence of evolution compares fossils of the same organism to see how it has changes over thousands of years. Ex. horse started out with 4 toes and now has a hoof A) Microevolution. B) Fossil record. C) DNA evidence. D) None of the above. Show Answer Correct Answer: B) Fossil record. 30. In hominid evolution, which trend is generally observed regarding brain size from early ancestors to modern humans? A) Brain size has remained constant. B) Brain size has consistently decreased. C) Brain size has progressively increased. D) Brain size has fluctuated unpredictably. Show Answer Correct Answer: C) Brain size has progressively increased. 31. Which of the following processes of evolution are random? A) Genetic Drift. B) Natural Selection. C) Sexual Selection. D) None of the above. Show Answer Correct Answer: A) Genetic Drift. 32. If a population is suffering from genetic drift, which of the Hardy-Weinberg conditions is not being met? A) No gene flow. B) Random mating. C) Extremely large population size. D) No mutations. Show Answer Correct Answer: C) Extremely large population size. 33. Natural selection is the process by which ..... A) The age of selected fossils is calculated. B) Organisms with traits well suited to their environment survive and reproduce more successfully than organisms less suited to the same environment. C) Acquired traits are passed on from one generation to the next. D) All answers are correct. Show Answer Correct Answer: B) Organisms with traits well suited to their environment survive and reproduce more successfully than organisms less suited to the same environment. 34. 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) Sexual selection. B) Divergent evolution. C) Geographical isolation. D) Disruptive selection. Show Answer Correct Answer: A) Sexual selection. 35. Which one of these is an example of natural selection? A) Cattle breeding. B) Size of finches beaks. C) Hybrid plants. D) Dog breeding. Show Answer Correct Answer: B) Size of finches beaks. 36. Study of the function of the body A) Physiology. B) Histology. C) Cytology. D) Anatomy. Show Answer Correct Answer: A) Physiology. 37. A bird's beak changes over time to fit it's environment. What is this an example of? A) Disease. B) Laziness. C) Adaptation. D) Variation. Show Answer Correct Answer: C) Adaptation. 38. 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. 39. 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 with armor plates. B) The discovery of fast moving two legged dinosaurs. C) The discovery of dinosaurs that walked on two legs. D) The discovery of dinosaurs that could swim. Show Answer Correct Answer: B) The discovery of fast moving two legged dinosaurs. 40. 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. 41. If populations remain reproductively isolated, what process can cause speciation to occur? A) Selective breeding. B) Genetic imprinting. C) Gene editing. D) Natural selection. Show Answer Correct Answer: D) Natural selection. 42. 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. 43. 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) Charles Darwin. B) Isaac Newton. C) Gregor Mendel. D) Marie Curie. Show Answer Correct Answer: A) Charles Darwin. 44. The differences in sparrow songs among similar species of sparrows is an example of what type of evolution? A) Adaptive. B) Behavioral. C) Reproductive. D) Convergent. Show Answer Correct Answer: B) Behavioral. 45. Which of the following is NOT a domain of life? A) Archaebacteria. B) Prokarya. C) Eukarya. D) Eubacteria. Show Answer Correct Answer: B) Prokarya. 46. 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. 47. Which of the following correctly summarizes the physical changes that early humans went through over the past million years or so? A) Bipedalism increased as use of tools increased. B) Bipedalism decreased as the use of tools increased. C) Brain size decreased as jaw size increased. D) Brain size increased as jaw size decreased. Show Answer Correct Answer: D) Brain size increased as jaw size decreased. 48. 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) Disruptive Selection. D) Sexual Selection. Show Answer Correct Answer: C) Disruptive Selection. 49. Father of evolution A) Darwin. B) Lamarck. C) Lyell. D) Wallace. Show Answer Correct Answer: A) Darwin. 50. 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. 51. 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. 52. 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. 53. 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. 54. 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. 55. 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. 56. 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. 57. Comparative embryology is? A) Study of adult organisms. B) Involves studying fossils. C) Focuses on plant development only. D) Comparison of early stages ofdevelopment in different animal species reveals commonevolutionary origins. Show Answer Correct Answer: D) Comparison of early stages ofdevelopment in different animal species reveals commonevolutionary origins. 58. 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. 59. Which of the following is NOT a cause of evolutionary changes according to the document? A) Genetic drift. B) Environmental pressures. C) Artificial selection. D) Random mutation. Show Answer Correct Answer: D) Random mutation. 60. Of all the places he visited, the ..... Islands influenced Darwin's ideas about evolution the most. A) Hawaiian. B) Bora Bora. C) Galapagos. D) Aleutian. Show Answer Correct Answer: C) Galapagos. ← PreviousNext →Related QuizzesScience QuizzesClass 12 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books