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Class 12 Biology Chapter 7 Evolution Quiz 23 (60 MCQs)

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1. If I wanted to look at DNA to study evolution, I am using what evidence?
2. An organisms with the "best" traits (adaptations) will live longer andreproduce more than others, causing changes in the population over time by acting on traits that are heritable
3. The accumulation of heritable changes experienced by organisms and populations to adapt to variations in the environment and survive is known as:
4. Which of the following can occur when a population is geographically isolated from another population?
5. Match each kingdom with it's domain.plantae
6. Gene flow occurs .....
7. What are a group of organisms that are the SAME species living in the SAME area and interact with one another?
8. The genetic codes of different species share a lot of similarities for a protein. This is .....
9. Darwin referred to this as survival of the fittest. Over time, it results in changes in the inherited characteristics of a population because organisms with adaptations that make them fit for their environment will survive and reproduce better than those without favorable traits.
10. The study of where organisms live now and where their ancestors have lived in the past is called
11. Which of the following best describes the term 'speciation'?
12. He was one of the first scientists to propose that species change over time but was wrong about how species change
13. Biochemical (Molecular) Evidence
14. What type of evidence of evolution occurs when small changes in organisms tend to fluctuate back and forth?
15. Reproduction happens with
16. Which sentence best describes vestigial structures?
17. Which one of these is an example of artificial selection?
18. A classification system
19. What happened when the trees turned dark color?
20. Artificial selection in animals often focuses on (a)
21. We are descendants of our .....
22. By which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.
23. Having a very high birth weight or a very low birth weight increases the mortality rate of human babies. What type of selection may occur over time?
24. All answers listed below are true about bacteria except
25. A population moving from on place to another.
26. What is a common misconception about natural selection?
27. Change over time; the process by which modern organisms have descended from ancient organisms.
28. How does the founder effect influence genetic variation in a new population?
29. What kind of a structure is it? An Ostrich's wing
30. A rather large population of foxes has 555 individuals with tan fur and 390 individuals with red fur. Assume that red is recessive. If you started with q$^{2}$ what do you find next?
31. Which gas was introduced by stromatolites and allowed for more complex life to exist on Earth?
32. What does "survival of the fittest" mean?
33. Refers to the variety of life on Earth, including the number of species, their genetic diversity, and the ecosystems they inhabit. Evolutionary biology helps us understand how this biodiversity has emerged and how it is maintained over time.
34. (a) is a key feature of Darwin's theory of evolution.
35. The idea that species will change over time to form new species.
36. Which of the following best describes the concept of 'descent with modification'?
37. Why was Charles Darwin able to offer a large amount of evidence for his theory of evolution by natural selection?
38. True or False, in the early history of Earth, there was no oxygen present in the atmosphere
39. What is the main focus of evolutionary theory?
40. What type of structure is NOT needed for the organism to survive, such as an appendix?
41. Which substance do biochemists often search for in fossils to help better understand the evolutionary relationships of the organism that formed the fossil?
42. True or False-Individuals within a population DO evolveShow Answers
43. Structures that have different mature forms, but develop from the same embryonic structure are called ..... structures.
44. What is biogeography?
45. A chemical spill causes the offspring of ladybugs to have blue dots instead of black dots.
46. When allelic frequencies remain unchanged, a population is in genetic equilibrium. This statement expresses which of the following?
47. -The process of two closely related parents, or close relatives, who share very similar alleles. Two different species are involved.-Increase the amount of homozygous alleles.-One species involved-Alleles of the offspring are very similar to parents.-High probability of genetic mutation.
48. Consists of all genes, including all the different alleles, that are present in a population
49. Which kind of giraffe would be more fit to eat from tall trees?
50. If you take antibiotics only the resistant bacteria survive and the non-resistant bacteria die. This is an example of .....
51. When species evolve into another species; ..... occurs.
52. Which of the following best explains the data observed in part 2 of our lab?
53. Evidence of evolution
54. The species of finches that Darwin observed differed in the shape of their beaks. According to Darwin, all of these species probably differed due to .....
55. Which of the following questions can best be answered with numerical (#) data?
56. Monophyletic Group
57. Crossing over in the chromosomes during meiosis, conjugation between bacterial cells and fertilization of an egg cell with a sperm cell all will result in what?
58. Vertebrate embryos:
59. All of the following are part of Hardy Weinberg law for populations in equilibirum EXCEPT
60. What type of selection favors the middle of a population curve?
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