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Evolution

Short Answer Type

61. (i) Give any two striking similarities in the structure of embryos of all the vertebrates.

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62. What according to Lamarck was the driving force for evolution? Explain with an example.

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63. What is biogeography ? How does the distribution of animals and plants support evolution ?

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64. What is adaptive radiation ?

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65. Name the various theories of evolution.

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66. List the main points of Lamarck's theory.

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67. Give the main points of Darwin's Theory of Evolution.

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One Word Answers

68. Homo sapiens arose during which age?

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Short Answer Type

69. Explain antibiotic resistance observed in light of Darwinian selection theory.

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70. Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.

Fossils of Dinosaurs have been unearthed to reveal evolution of reptiles in Jurassic period. It further led to the evolution of birds and mammals. Recently, fossils of shark-toothed reptiles from Sahara deserts have been discovered. Fossils of flying birds with teeth in the jaws has been discovered.

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