Which one of the following character causes cross pollination

Options :
  1. Cleistogamy
  2. Dichogamy
  3. Homogamy
  4. All the above
Answer and Explanation :-

Answer: Option 2

Explanation:

When maturation period of male and female gametes is different, then cross pollination is compulsory, it is known as Dichogamy.

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Contrary to what you may assume, I am not a pessimist but an indifferentist- that is, I don't make the mistake of thinking that the... cosmos... gives a damn one way or the the other about the especial wants and ultimate welfare of mosquitoes, rats, lice, dogs, men, horses, pterodactyls, trees, fungi, dodos, or other forms of biological energy.
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