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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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The main points of Lamarck's theory of evolution are:

1. Effect of environment.

2. Effect of use and disuse of organs.

3. The inheritance of acquired characters.

4. The origin of new species.

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

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68. Homo sapiens arose during which age?

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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.

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