Question

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What are the contrivances for cross pollinations? Nature favours cross pollination.

Why?
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Answer 1

The main contrivances ensuring cross pollination are as follows: (i) Diclincy or Unisexuality: In unisexual flowers stamens and carpels are found in different flowers. Unisexuality can be of two types: Monoecious plant : When male and female flowers are borne on the same plant. e.g., Maize, Cucurbits, Castor.

Answer 2

Explanation:

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