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

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1. If a parent acquires a body structure during its lifetime, it could pass on that characteristic structure to its offspring.
2. Spiders can lay hundreds of eggs at a time, but only a few survive. This is an example of
3. In a group of mushrooms exposed to a poisonous chemical, only a few of the mushrooms survived. The best explanation for the resistance of the surviving mushrooms is that the resistance
4. When the DNA of an organism is altered due incorrect copying it is referred to as .....
5. Natural selection is the ability to:
6. How would overexposure to X-rays affect most animal cells?
7. Who had a theory similar to Darwin (struggle for existence)?
8. Distribution of species and ecosystems in geographic space and through geological time
9. When there is a difference in population based on genes, it is said to be a .....
10. Physical separation of a population, leading to speciation.
11. Circle all that apply:All traits give organisms an advantage.
12. If the frequency of recessive allele is 0.2, what is the frequency of the homozygous recessive individuals?
13. In the classification hierarchy, which rank comes directly above 'species'?
14. Which term best describes a specially developed characteristic that enables an organism to live in a specific environment?
15. The electrical sparks mimicked?
16. T or F:Adaptations increase the ability for an organism to survive
17. Whose extensive travels, particularly in the Galapagos Islands, provided crucial observations and evidence for the theory of evolution by natural selection?
18. 2)In the reducing atmosphere of earth, ..... was absent.
19. Binomial nomenclature is a 2-name naming system based on
20. ..... is when a change in allele frequencies as a result of the migration of a small subgroup of a population
21. Scientist who proposed the idea of "uniformitarianism"
22. What does natural selection produce change in?
23. Which of the following describes the evidence scientists have collected about the age of the Earth?
24. Natural selection is known as
25. This is the pattern of natural selection where BOTH of the extreme versions of a trait are more advantageous than the average, so a population evolves in both directions away from the average
26. What is the primary mechanism by which new species arise according to the theory of evolution?
27. ..... is all the genes, including all the different alleles for each gene, that are present in a population at any one time
28. Which of the following is an example of convergent evolution?
29. Basic unit of geologic time scale
30. What is a trait controlled by only one gene?
31. Geologic time periods are determined by:
32. The prefix "halo" such as in halophile most likely means .....
33. Which mechanism of change occurs when chance events, rather than fitness, cause a change in the allele frequency of a population?
34. A slight difference in an inherited trait between individual members of the same species.
35. Which scientist proposed that a giraffe, while stretching its neck to obtain food, could pass this trait on to its offspring?
36. Gel electrophoresis is a way of separating genes due to their relative size. The larger the gene, the less distance it travels in the gel. The electrophoresis results can best support which of the following conclusions?
37. What is a change in relative frequencies in a gene pool due to a sudden, drastic reduction in population size?
38. A randomly selected group from a family would show more genetic variation than a randomly selected group from a
39. Why are keystone species often targeted for conservation efforts?
40. Selective breeding of domesticated plants and animals to produce offspring with desired genetic traits
41. What does variation in a population mean?
42. Which of the following is NOT a factor that affects the process of natural selection?
43. What does the term 'gene flow' refer to?
44. If you are to construct a cladogram over ape species, Which of the following would be furthest apart?
45. Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of
46. Which of the following is not a condition required for maintaining the Hardy-Weinberg Equilibrium?
47. Antibiotic resistant strains of bacteria are on the increase, according to data from the CDC. Which of the following best provides a description for antibiotic resistance?
48. In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?
49. Rhinoceroses and horses are related. They have very similar digestive systems and an odd number of toes on their feet. Horses have one toe, and rhinoceroses have three. These facts BEST support which claim?
50. Human newborns usually weigh between 6-8 pounds
51. Which of the following statements are TRUE about organisms in the Domain Bacteria?I. Consist of bacteria and archaebacteriaII. Some are photoautotrophsIII. Genetic material is associated with histone proteinIV. Membrane-enclosed organelles are not present
52. Is a mechanism of evolution that results from random fluctuations in the frequency of alleles (versions of a gene) in a population. It occurs when the frequency of an allele changes in a population by chance, rather than by natural selection.
53. Used for how old the meteorites
54. ..... :The process whereby organisms better adapted to their environment tend to survive and produce more offspring.
55. Evolution theory has been tested many times, and has always been supported bythe evidence.
56. Can bacteria be photosynthetic?
57. P + q = 1. If p represents the dominant allele frequency, what would q represent?
58. Which scientist unfortunately had many of his discovered specimens burn up on a ship?
59. Whose work on population dynamics, particularly the idea of competition for limited resources, greatly influenced Darwin's thinking on the struggle for existence?
60. What type of evolution happens when organisms with different traits become more similar because they are in the same environment?
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