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102. As a student of biology, trace the evolutionary history of man.

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103. What causes speciation according to Hugo de Vries ?

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104. Name any two vertebrate body parts that are homologous to human forelimbs.

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105. What is divergent evolution ? Explain taking an example of plants.

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106. What is adaptive radiation ? Show how adaptive radiations gave rise to a variety of marsupials in Australia ?

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107. Give a brief summary od Darwin's theory of evolution and evidences in favor of it and its drawbacks.

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108. Name the scientist who proved the spontaneous generation theory to be invalid.

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109. According to the theory of special creation the earth is how many years old?

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110. Lichens are an indicator of pollution. Explain.

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