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Class 12 Biology Chapter 7 Evolution Quiz 18 (60 MCQs)

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1. If humans and penguins share similarities in an enzyme this could be an example of:
2. A number of different species arise from one common ancestor-New environments caused differences to evolve in populations
3. In a population of 1000 people, 90 have blue eyes. What percent of the population is hybrid brown eyes?
4. Constant and predictable
5. ..... is the number of times that an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene
6. Physical structures that were fully developed and functional in an earlier group of organisms but are reduced and unused in later species
7. An inherited characteristic that increases an organisms ability to survive and reproduce in its specific environment is called a(n)
8. What animal is Darwin known for studying?
9. Modern theory of Evolution is also called as
10. What is the eon, era, period, and epoch we are living in?
11. In a population of beetles, a mutation causes some beetles to be green instead of brown. If birds prefer to eat brown beetles, what is likely to happen to the green beetle population over time?
12. Large horns and antlers are a characteristic of males so they can fight for female mates
13. We use this to track whether a gene was "transformed" and used in an organism.
14. WHAT DOES DARWIN'S THEORY SAY?
15. If two organisms share a common ancestor they are known to be
16. An ecologist observes a population of snakes on an island for a month every year. After the eleventh month, he sees the snake population has been decimated, and decides to wait for the snakes to repopulate before coming back for further observation. When he returns five years later, he finds a very homogenous-looking population of snakes. What is the name of the effect he observed?
17. Studying fossils helps helps us to see how things were .....
18. ..... :A fossil that shows an intermediate state between an ancestral form and its modern descendants
19. What is the study of the similarities and differences in unborn fetuses, or developing organisms?
20. The theory of evolution states that
21. Which of the following best describes the founder effect?
22. Numerous fishes, other sea life; many plants, first trees; wingless insects appeared when?
23. A scientific theory that explains the process of evolution
24. Natural selection is the process that passes down ..... traits.
25. Speciation can only occur when either interbreeding OR the production of fertile offspring is somehow prevented.
26. What type of variation in finches is passed to their descendants?
27. Over time, adaptions can lead populations to experience
28. A characteristic, a behavior, or any inherited trait that makes species able to survive and reproduce in a particular environment.
29. Biological evolution is a
30. Evolution can be described as
31. What kind of Archaea would you find in places such as volcanoes and hot vents on the ocean floor?
32. Change over time
33. In a comparison of birds and mammals, the condition of having four limbs is
34. An Analogous structure is described as body parts that have a similar function but a similar structure. Which of the following is an example of an analogous structure
35. By studying the fossil record extensively, Darwin discovered that .....
36. Which statement describes the best evidence that two species share a recent common ancestor?
37. What is an example of evolution observable in modern times?
38. Molecular Evidence is found in .....
39. The poison in the skin of a frog is an example of a ..... adaptation
40. Comparing two individuals of a species, evolutionary "fitness" would be best measured by which of the following?
41. Https://www.youtube.com/watch?v=zK8XGEDcTfo&t=250sWhich of the following features describe Tiktaalik? i. Long Neck ii. Lungs iii. Round head and Snout iv. Armlike Fins
42. When more offspring are being produced, there is a competition of limited resources ..... this is known as:
43. In Darwin's day, most people believed the earth was ..... years old.
44. What is a change in a gene pool due to separation of a small population from a larger population?
45. Postzygotic isolation involves the inability of ..... between two species to reproduce.
46. Occurs when a population experiences a dramatic reduction in size, leading to a loss of genetic diversity due to random fluctuations in allele frequencies.
47. Evolution is a scientific fact.
48. Darwin thought all the Galapagos tortoises shared a ..... that came to one of the islands millions of years ago.
49. What type of reproductive barrier separates species because one mates at dawn and the other at dusk?
50. The process in which an animal cannot reproduce any more and dies out is known as .....
51. Which of the following best explains the bottleneck effect?
52. During a biology class, Mark and Amelia were discussing how mutations affect the formation of new species. What role do mutations play in the process of speciation?
53. A common definition for evolution is-Change in allele frequency over time. What does time mean? (best answer)
54. Geologic subdivisions
55. ..... :Structures shared by 2 or more different species due to common ancestry.
56. The struggle for existence against other members of an organisms species is
57. Which of the following pieces of evolution evidence deals with comparing similar structures in various species?
58. Subdivisions of eras
59. The evolution by which new species are formed.
60. Species alive today have descended with modification from species that lived in the past. All organisms on Earth are united into single tree of life by the principle of:
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