This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 7 Evolution – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The concept of gene flow is demonstrated when a cow is driven off from its herd, joins another herd, and reproduces. When the cow contributes to the gene pool of the new herd, which of these most likely Increases? A) Environmental fitness. B) Genetic variation. C) Reproductive mutations. D) Natural selection. Show Answer Correct Answer: B) Genetic variation. 2. What role does convergent evolution play in biodiversity? A) Promotes specialization in a single ecological niche. B) Increases genetic diversity by limiting similarities between species. C) Contributes to functional diversity by generating similarities in species that do not share a common ancestor. D) Reduces competition between species by generating marked differences. Show Answer Correct Answer: C) Contributes to functional diversity by generating similarities in species that do not share a common ancestor. 3. Fossil records indicate that species changes generally A) Stop when a species forms. B) Take place over many generations. C) Speed up with stable conditions. D) Are independent of the environment. Show Answer Correct Answer: B) Take place over many generations. 4. What is the study of prehistoric life through the fossil record? A) Morphology. B) Biogeography. C) Paleontology. D) Embryology. Show Answer Correct Answer: C) Paleontology. 5. Which of the following statements supports the idea that fossils can be used as evidence of evolution? A) Ancient organisms were all very different than today's organisms. B) All organisms alive today have left fossil evidence. C) Fossils are often similar, but not identical to, modern organisms. D) Fossils show no differences to modern organisms. Show Answer Correct Answer: C) Fossils are often similar, but not identical to, modern organisms. 6. Which of the following best describes natural selection? A) A process where organisms better adapted to their environment tend to survive and produce more offspring. B) A random change in allele frequencies in a population. C) The movement of individuals into or out of a population. D) The formation of new species from existing species. Show Answer Correct Answer: A) A process where organisms better adapted to their environment tend to survive and produce more offspring. 7. Study of embryos and their development A) Embryology. B) Variation. C) Vestigial structures. D) Common ancestor. Show Answer Correct Answer: A) Embryology. 8. Insect resistance of pesticides is caused by A) Insects learn how to avoid the pesticides. B) Only the resistant insects survive to reproduce. increasing the allele frequency of the tough. C) Insects are able to absorb the pesticide after repeated exposure. D) Insects avoid the pesticide. Show Answer Correct Answer: B) Only the resistant insects survive to reproduce. increasing the allele frequency of the tough. 9. Which of the following is true of evolution? A) Individuals evolve, populations do not. B) Individuals evolve; individuals do not. C) Traits like scars and long hair are passed on to offspring. D) Individuals evolve more slowly than populations. Show Answer Correct Answer: B) Individuals evolve; individuals do not. 10. Which part of the theory of evolution did Darwin develop after reading Thomas Malthus? A) Evolution occurs as advantageous traits accumulate in a population. B) In any population, there is variation and unequal ability to individuals to survive and reproduce. C) Only the best-fit individuals survive and get to pass on their genes. D) Populations tend to grow exponentially, overpopulate, and exceed their resources. Show Answer Correct Answer: D) Populations tend to grow exponentially, overpopulate, and exceed their resources. 11. What characteristic did Darwin observe about the finches on the Galapagos Islands? A) Their beaks. B) Their body sizes. C) Genotypes. D) Their feathers. Show Answer Correct Answer: A) Their beaks. 12. Fixed and known value A) Half Life. B) Samarium-Neodymium Dating. C) RADIUM-STRINTIUM DATING. D) Decay Rate. Show Answer Correct Answer: A) Half Life. 13. What is NOT vestigial structure for humans? A) Kidneys. B) Appendix. C) Wisdom teeth. D) Coccyx. Show Answer Correct Answer: A) Kidneys. 14. A process in which 2 species evolve in response to changes in each other. A) Convergent Evolution. B) Divergent Evolution. C) Coevolution. D) None of the above. Show Answer Correct Answer: C) Coevolution. 15. The method of scientific classification used today is based on the classification system developed by A) John Ray. B) Charles Darwin. C) Carolus Linnaeus. D) M. Courtney Latimer. Show Answer Correct Answer: C) Carolus Linnaeus. 16. Is a type of natural selection in which individuals with intermediate traits have higher fitness and are more likely to survive and reproduce. This leads to a reduction in the variation of the trait in the population over time, as individuals with extreme traits have lower fitness and are less likely to survive and reproduce. A) Directional selection. B) Stabilizing selection. C) Inbreeding. D) Hybridization. Show Answer Correct Answer: B) Stabilizing selection. 17. The variety of organisms, their genetic information, and the communities in which they live A) Biodiversity. B) Speciation. C) Relative dating. D) Mass extinction. Show Answer Correct Answer: A) Biodiversity. 18. Which of the following types of reproductive barriers separate a pair of species that could interbreed except that one mates at dusk and the other at dawn? A) Habitat isolation. B) Mechanical isolation. C) Temporal isolation. D) Behavioral isolation. Show Answer Correct Answer: C) Temporal isolation. 19. Darwin believed in the idea that evolution happened slowly over a long period of time called A) Mass extinction. B) Gradualism. C) Symbiosis. D) Punctuated equillibrium. Show Answer Correct Answer: B) Gradualism. 20. A group of similar organisms that can breed and produce fertile offspring. A) Extinction. B) Fossils. C) Variation. D) Species. Show Answer Correct Answer: D) Species. 21. ..... is how well an organism can survive and reproduce in its environment A) Fossil. B) Natural Selection. C) Adaptation. D) Evolution. E) Fitness. Show Answer Correct Answer: E) Fitness. 22. ..... have genes, which is where your eye and hair color come from. A) Crocodiles. B) Chromosomes. C) Crochet. D) None of the above. Show Answer Correct Answer: B) Chromosomes. 23. Populations of organisms that exhibit a high degree of variation have a greater chance for survival than populations of organisms that show little variation. This statement is ..... A) Always true. B) Usually true. C) Rarely true. D) Never true. Show Answer Correct Answer: B) Usually true. 24. What is a common description for natural selection? A) Survival of the smartest. B) Survival of the fastest. C) Survival of the fittest. D) Survival of the biggest. Show Answer Correct Answer: C) Survival of the fittest. 25. A sink is a snake like creature that slithers along the ground, but has very tiny legs that serve no function, these legs are an example of a ..... A) Homologous Structure. B) Natural Selection. C) Bottle Neck effect. D) Vestigial Structure. E) Fossil. Show Answer Correct Answer: D) Vestigial Structure. 26. Island chain that inspired Darwin A) Barrier. B) Hawaiian. C) Galapagos. D) Phillipines. Show Answer Correct Answer: C) Galapagos. 27. Which of the following best describes the process by which organisms better adapted to their environment tend to survive and produce more offspring? A) Gene flow. B) Natural selection. C) Mutation. D) Genetic drift. Show Answer Correct Answer: B) Natural selection. 28. Structures that were used by ancestors, but not needed for present day organisms. A) Vestigial Structures. B) Homologous Structures. C) Analogous Structures. D) None of the above. Show Answer Correct Answer: A) Vestigial Structures. 29. How do fossils provide evidence that evolution has happened on Earth? A) Fossils show how the sizes of certain animals has changed drastically over millions of years. B) Fossils show that some species have gone extinct. C) Fossils show how life forms present today are different than those from the past. D) Different sedimentary rock layers provide evidence for how the environment has changed over time. Show Answer Correct Answer: C) Fossils show how life forms present today are different than those from the past. 30. The Eohippus lived in the ..... epoch A) Pliocene. B) Holocene. C) Eocene. D) Palaecene. Show Answer Correct Answer: C) Eocene. 31. The gradual process by which something changes into a different form. A) Gene pool. B) Speciation. C) Natural selection. D) Evolution. Show Answer Correct Answer: D) Evolution. 32. What would be considered a vestigial structure in the human body? A) Lungs. B) Heart. C) Brain. D) Appendix. Show Answer Correct Answer: D) Appendix. 33. Who developed the Theory of Evolution? A) Charles Lamark. B) John Scopes. C) HMS Beagle. D) Charles Darwin. Show Answer Correct Answer: D) Charles Darwin. 34. Matthew and Alondra are studying the roles of native species and invasive species in Florida's ecosystems. How do they differ in their contributions to ecological balance? A) Native species disrupt the ecosystem, while invasive species maintain balance. B) Both contribute equally to maintaining ecological balance. C) Native species maintain balance, while invasive species disrupt it. D) Invasive species are more beneficial than native species. Show Answer Correct Answer: C) Native species maintain balance, while invasive species disrupt it. 35. Nodes and branches are called ..... A) MRCA. B) Common ancestors. C) Clades. D) None of the above. Show Answer Correct Answer: C) Clades. 36. Selective breeding of plants/animals to promote desirable traits in offspring is ..... A) Mutations. B) Artificial selection. C) Variations. D) None of the above. Show Answer Correct Answer: B) Artificial selection. 37. The principle that, among the range of inherited trait variations, those contributing to reproduction and survival will most likely be passed on to succeeding generations A) Artificial selection. B) Evolution. C) Fitness. D) Natural selection. Show Answer Correct Answer: D) Natural selection. 38. Alex is collecting data about the length of earthworms in his backyard. The shortest worm he found is 4 inches long; the longest worm is 8 inches long. If most of the worms are either short or long, which type of distribution is displayed in the population? A) Stabilizing. B) Directional. C) Normal. D) Disruptive. Show Answer Correct Answer: D) Disruptive. 39. An organism that is made up of many cells. A) Human Being. B) Fossil. C) Multicellular Organism. D) Unicellular Organism. Show Answer Correct Answer: C) Multicellular Organism. 40. Which form of sexual selection uses exuberant displays of attractiveness to attract a female? A) Male-Male Rivalry. B) Female Choice. C) All the above. D) None of the above. Show Answer Correct Answer: B) Female Choice. 41. Which is not evidence for evolution? A) Many animals have homologous structures due to common ancestry. B) Many animals have vestigial structures from an ancestor. C) We can observe changes in life forms by observing the fossil record. D) All of these are evidence for evolution. Show Answer Correct Answer: D) All of these are evidence for evolution. 42. Which of the following in NOT part of natural selection? A) More organisms born than will survive. B) The more organisms, the more competition. C) All organisms will survive. D) The "more fitted" will survive. Show Answer Correct Answer: C) All organisms will survive. 43. Which phrase best describes evolution? A) Genetic change in populations that gives rise to new life forms from common ancestors. B) Change in populations from complex to simpler organisms. C) Development of characteristics that organisms need in response to changes in environmental conditions. D) Change in populations from simple to complex organisms. Show Answer Correct Answer: A) Genetic change in populations that gives rise to new life forms from common ancestors. 44. Divergent Evolution A) When two species living close together change in response to each other. B) There must be no natural selection. C) A number of different species split-off from a common ancestor. D) There must be no movement into or out of a population. Show Answer Correct Answer: C) A number of different species split-off from a common ancestor. 45. Yellow toucan birds seek out one another to make babies together and tend to avoid the green toucan birds. This is an example of: A) Genetic Drift. B) Non-random mating. C) Gene flow. D) Mutation. Show Answer Correct Answer: B) Non-random mating. 46. This is a result of the organism's genetic variability, ability to reproduce and natural selection. A) Genetics. B) Fertility. C) Evolution. D) Natural selection. Show Answer Correct Answer: C) Evolution. 47. Which of the following describes the barrier that inhibits breeding of two bird species due to differences in bird song? A) Behavioral isolation. B) Ecological isolation. C) Habitat isolation. D) Mechanical isolation. Show Answer Correct Answer: A) Behavioral isolation. 48. What is the definition of competition in evolutionary biology? A) The process by which species adapt to their environment. B) The cooperation between different species to ensure survival. C) The movement of organisms from one habitat to another. D) The struggle between organisms to survive as they attempt to use the same limited resources. Show Answer Correct Answer: D) The struggle between organisms to survive as they attempt to use the same limited resources. 49. What is meant by "descent with modification" in evolutionary biology? A) The idea that new generations are identical to their ancestors. B) The concept that each generation will be exactly half as fit as the previous one. C) The principle that over the many generations, the beneficial trait will be shared by most of the population. D) The belief that all organisms are descended from a single common ancestor. Show Answer Correct Answer: C) The principle that over the many generations, the beneficial trait will be shared by most of the population. 50. A placental squirrel in North America resembles a marsupial squirrel in Australia. They are genetically and geographically separated. This is best explained by ..... A) Convergent evolution. B) Spontaneous generation. C) Vestigial structures. D) Divergent evolution. Show Answer Correct Answer: A) Convergent evolution. 51. A change in gene frequency within a population over time. A) Species. B) Evolution. C) Natural Selection. D) Coevolution. Show Answer Correct Answer: B) Evolution. 52. How organisms change across many generations A) Anatomy. B) Evolution. C) Common ancestor. D) Food webs. Show Answer Correct Answer: B) Evolution. 53. How well an organism can survive and reproduce in its environment A) Fossil. B) Inherited trait. C) Ecology. D) Fitness. Show Answer Correct Answer: D) Fitness. 54. A cell with no membrane bound organelles A) Prokaryote. B) Eukaryote. C) All the above. D) None of the above. Show Answer Correct Answer: A) Prokaryote. 55. Which of the following conditions are necessary for natural selection to occur? A) Overproduction of offspring. B) Variation within a population. C) Variation of fitness among the population. D) All of the above. Show Answer Correct Answer: D) All of the above. 56. What is gene mutation? A) Favorable traits chosen. B) Alteration of DNA that could be helpful or harmful.(could cause evolution). C) Movement of genes into and out of a population. D) An elimination of a species after a change in their DNA. Show Answer Correct Answer: B) Alteration of DNA that could be helpful or harmful.(could cause evolution). 57. Study of mammals A) Mammalogy. B) Zoology. C) Anatomy. D) Physiology. Show Answer Correct Answer: A) Mammalogy. 58. Which best describes how shared characteristics can be used to identify evolutionary relationships? A) If organisms have many shared characteristics, they are likely to be closely related. B) If organisms have a shared characteristic, it means they are closely related. C) If organisms have a common ancestor, most of their characteristics will be shared. D) If two organisms have a shared characteristic, it means one evolved from the other. Show Answer Correct Answer: A) If organisms have many shared characteristics, they are likely to be closely related. 59. Time period of diverse marine life, including vertebrates; vascular plants A) Devonian. B) Permian. C) Ordovician. D) Paleogene. Show Answer Correct Answer: C) Ordovician. 60. This scientist believed that if an organism used a body part or organ enough it would become stronger A) Jean-Baptiste Lamarck. B) Charles Darwin. C) Thomas Malthus. D) Alfred Wallace. Show Answer Correct Answer: A) Jean-Baptiste Lamarck. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Biology Chapter 7 Evolution Quiz 1Class 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books