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Class 12 Biology Chapter 7 Evolution Quiz 21 (60 MCQs)

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1. What do mass extinctions do?
2. Match each kingdom with it's domain.animalia
3. "Biodiversity" refers to the idea that .....
4. The Law of Superposition helps us understand the age of fossils compared to other fossils.
5. What is the relationship between a theory and experimental results?
6. Natural selection is when ..... decides who survives and who doesn't
7. Which of the following evolutionary forces can introduce new genetic variation into a population?
8. The eye structures of cephalopods, such as the blue ringed octopus, and mammals evolved independently to perform very similar functions. This type of evolution is called
9. A population of large fish eats the smaller brown fish that live near the bottom of the ocean. Every so often, the brown fish have a green offspring, which are more easily seen and eaten by predators. The brown fish survive in the ocean because .....
10. Which statement best describes conditions on early Earth?
11. Biological fitness is defined as .....
12. The condition where a gene pool is not changing in frequency across generations
13. In what kingdom would you find trees and flowers?
14. Can two different species have analogous structures?
15. If the frequency of two alleles in a gene pool is 90% A and 10% a, what is the frequency of individuals in the population with the genotype Aa?
16. ..... is the heritable characteristic that increases an organisms ability to survive and reproduce in an environment
17. What is change overtime
18. Which of these is a condition that must be met for Hardy-Weinberg equilibrium?
19. What type of evidence was most likely used to reach the conclusion that species with similar DNA are closely related?
20. Theory of Natural Selection for organic evo is put forward by .....
21. A category of structures that have a similar function, but are structurally different.
22. The different species of the Hawaiian honeycreepers shown all descended from a single species of North American bird. They now have different beaks, eat different food, sing different songs, and live in different environments on the islands. Which factor probably contributed MOST to the development of these different species?
23. What is the outcome of genetic change in a population?
24. Traits, such as human height, that are controlled by more than one gene are known as
25. Only the parrots with the strongest beaks can break the tough nuts of the Amazon. Those with weaker beaks fail to thrive, have less offspring, and eventually die out. This is an example of .....
26. True or False:Darwin was the first scientist who tried to explain evolution.
27. When was pangaea starting to form
28. Population studies on a rat population showed that over time, one allele that used to be dominant, has been replaced with a different dominant allele. This is an example of
29. Why is natural selection important for the theory of evolution?
30. Most gene mutations are .....
31. Evidence that evolution occurs includes all of the following except .....
32. What type of evidence for evolution is provided by the similarity of the forelimbs of whales, bats, and humans?
33. Which of the following is a vestigial structure in humans?
34. Similar structures that suggest evidence of common ancestry
35. A mutation in which of the following parts of a gene is likely to be most damaging to a cell?
36. A spider may produce hundreds of eggs, only a few of which may survive. This is an example of .....
37. In Darwin's exploration throughout Galapagos Island, what particular specie did he make use as a subject for his study?
38. Is the evolution of morphological similarities in organisms that are not closely related but they have similarities in their habitats, they have similar environmental demands.
39. While working in distant lands, Wallace sent Darwin a paper he had written. In the paper, Wallace explained his evolutionary theory. This served to confirm what Darwin already thought.
40. Living species that are closely related share a .....
41. A mutation occurs in a particular animal and quickly begins to increase in frequency throughout the population. Which of the following are you most likely to conclude?
42. The scientific study of how living things are classified.
43. Which of the following species has the most similar DNA to humans?
44. What was the effect of volcanoes on the Earth's early atmosphere?
45. What are a group of organisms that share the same characteristics and can mate with one another to produce fertile offspring?
46. Which of the following experiments would best demonstrate the principle of adaptation in a population?
47. What evidence shows that parts of Utah were once the sea floor of an ancient ocean?
48. In a population of clover flowers, there are both white and purple varieties. The cows that graze the field where the clover grows prefer the purple variety. Over time, the white clover flowers become much more numerous and the purple ones more scarce. This is an example of which process that can cause evolutionary change?
49. If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?
50. Who is credited with developing the theory of evolution by natural selection?
51. Is the process by which humans selectively breed plants or animals for specific traits. It is a form of selection that is driven by human choice rather than natural selection pressures.
52. Individuals interbreeding is called .....
53. What important event in Earth's history occurred during the Jurassic period?
54. Which of the following pieces of evolution evidence deals with similar molecules in related individual species?
55. An animal has several inherited characteristics that makes it much fitter than its rivals. According to Natural Selection it should:
56. Why do some scientists believe that RNA, rather than DNA, was the first genetic material?
57. Northern elephant seals were hunted by humans in the 1890s, reducing their population size to 20 individuals. Even though their population is now over 30, 000, the seals still have reduced genetic variation. What's the best explanation of this phenomenon?
58. An individual animal, plant, or singled-celled life form is known as an
59. Which of the following phrases best describes the results of natural selection?
60. How do organisms get new traits (alleles)?
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