What is the advantage of cleistogamy?

Assured seed- set and not dependent on pollinators.

Cleistogamy is a type of pollination in which the flowers do not open, so they are self-pollinated. This means that the pollen from the anthers is transferred to the stigma of the same flower, without the help of pollinators. This ensures that the flowers will produce seeds, even in the absence of pollinators.

This is an advantage for plants that live in areas where pollinators are scarce, or in areas where the weather is not conducive to pollination. Cleistogamous plants can also produce seeds even if they are damaged by insects or other factors.

The other options are not advantages of cleistogamy. More efficient pollen dispersion is not an advantage of cleistogamy, because the flowers do not open and the pollen is not dispersed. All kinds of pollination do not take place in cleistogamy, because it is a form of self-pollination. Cleistogamy does not lead to genetic variations, because the pollen is from the same flower.