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Question

Diversification in plant life appeared initially

A
Due to long periods of evolutionary changes
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B
Due to abrupt mutations
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C
Suddenly on earth
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D
By seed dispersal
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Solution

The correct option is A Due to long periods of evolutionary changes
Diversification in plant life appeared due to long periods of evolutionary changes. Initially plants were thalloid. There were no differentiation among root, stem and leaves. Vascular tissues were absent. By the evolutionary changes occured for longer period, diversification in plants were appeared. Thus, option A is correct.

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