Read the passage and answer the following question:

In flowering plants, the production of male and female gametes occurs within the pollen grain and embryo sac, respectively. Since both types of gametes are immobile, they require a mechanism to be brought together for fertilization to take place. Pollination is the process that serves this purpose. Pollination refers to the transfer of pollen grains, which are released from the anther to the stigma of a pistil. Flowering plants have developed various remarkable adaptations to accomplish pollination. They rely on external agents to facilitate the process of pollination.

Which one of the following is not biotic agent of pollination?

Wind

Wind is not a biotic agent of pollination. It is an abiotic (non-living) agent. Wind pollination, also known as anemophily, occurs when pollen grains are carried by the wind from the male reproductive structures (anthers) to the female reproductive structures (stigma) of a flower.

Bees, elephants, and bats, on the other hand, are biotic agents of pollination.

Bees, for instance, are important pollinators as they visit flowers to collect nectar and inadvertently transfer pollen while doing so.

Elephants and bats also play a role in pollination by carrying pollen on their bodies or through their feeding habits. Therefore, the correct answer is "Wind."