Term used for pollination which takes place in closed flowers is :

Question

Accepted Answer

Cleistogamy is the term used for pollination that occurs in closed flowers, making Option 2 the correct answer. This process involves flowers that do not open and are self-pollinated. Cleistogamous flowers ensure reproduction without the need for external pollinators, which can be advantageous in stable environments where cross-pollination opportunities are limited. This method guarantees seed production and genetic consistency, as the pollen from the same flower fertilizes the ovules.

Now, let's examine why the other options are incorrect:

1. **Allogamy**: This term refers to cross-pollination, where pollen from one flower fertilizes the ovules of another flower. Allogamy involves open flowers and often relies on external agents like wind, insects, or animals for pollination. This is the opposite of cleistogamy, which occurs in closed flowers.

3. **Herkogamy**: This term describes a physical separation between the male and female parts of a flower, preventing self-pollination and promoting cross-pollination. Herkogamy is a mechanism to encourage genetic diversity, unlike cleistogamy, which involves self-pollination in closed flowers.

4. **Dichogamy**: This refers to the maturation of male and female reproductive organs at different times within the same flower, reducing the likelihood of self-pollination and promoting cross-pollination. Dichogamy is not related to closed flowers, as it typically involves open flowers where timing prevents self-pollination.

In summary, cleistogamy is the correct term for pollination in closed flowers, as it involves self-pollination without the need for external pollinators, ensuring reproduction in a controlled manner. The other options describe different pollination strategies that do not involve closed flowers.