The agent of controlled pollination in plants is man. Controlled pollination is a process in which the pollen from one plant is transferred to the stigma of another plant with the aim of producing offspring with desirable traits. This process is carried out under controlled conditions by humans, usually plant breeders or farmers.
Controlled pollination allows for the selection of specific traits in plants, such as disease resistance, improved yield, and better fruit quality. This is achieved by selecting the parent plants with the desired traits and then transferring the pollen from those plants to the stigma of the other parent plants.
While wind, insects, birds, and water can also aid in the pollination of plants, controlled pollination requires the intentional intervention of humans to ensure that the desired traits are passed on to the offspring. Therefore, the agent of controlled pollination in plants is man.