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Evolution

Short Answer Type

31. Attempt giving a clear definition of the term species.

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32. Why was the theories of spontaneous generation not accepted ?

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33. State the three connotations of the theory of special creation.

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34. Briefly explain theory of biogenesis.

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35. Write the composition of primitive earth’s atmosphere according to the Big Bang theory..

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36. What are coacervates ?

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37. List characteristics of coacervates.

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One Word Answers

38. Which island did Alfred Wallace work on??

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Short Answer Type

39. Why is nascent oxygen supported to be toxic to aerobic life forms?

Nascent oxygen is very reactive and can react with different biomolecules. It is considered to be toxic to the aerobic life forms because oxygen can be converted into nascent oxygen . The nascent oxygen acts as a permanent oxidising agent and react with biomolecules like DNA to cause mutation and proteins to cause their degradation.

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40. Write the contribution of Urey and Miller.

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