Question

describe pollinating agent in detaile

Answer 1

Pollinating agents are animals such as insects, birds, and bats; water; wind; and even plants themselves, when self-pollination occurs within a closed flower. Pollination often occurs within a species. When pollination occurs between species it can produce hybrid offspring in nature and in plant breeding work.

Answer 2

Describe pollinating agents in detail:

Agents of pollination:

1. Pollination by insect: There are many insects that visit a flower to collect nectar such as bees, butterflies, beetles e.t.c. When they suck nectar from the flower, the pollen grains get stuck to their bodies. When these insects visit to another flower,they transfer pollen grains to stigma of that flower. Such flowers which are pollinated by insects are called entomophilous flowers. Generally, these flowers are large and showy with brightly colored petals to attract insects. They have sweet smell, sticky pollen grains and stigma. This is the most common means of pollination. flowers of rose and marigold are pollinated in this way.
2. Pollination by animal: Animals such as birds, squirrels, bats also help in pollination. Such flowers are called Zoophilous flowers. These flowers produce plenty of nectar but they do not have scent. They are colored, especially red and orange to attract animals. Among animals, snails, bats and birds are main agents of pollination. The humming birds and the honey thrushes are the most common pollinating agents. Flower of rafflesia is pollinated by elephant.
3. Pollination by wind: The flowers which are pollinated by wind are called anemophilous flowers. Such flowers are generally small and not showy. They  do not produce nectar or scent. The petals of flowers are not colored and are often green colored. In these flowers, pollen grains are light, dry and smooth. They are produced in large quantity as very few may reach the stigma of a flower. The stigma of such flowers are large, feathery  and hang out to easily receive the pollen grains carried by wind in them. This includes flowers of maize, rice , paddy, wheat, pine.
4. Pollination by water: Cross-pollination takes place with the help of water in some flowers. Such flowers are called hydrophilous flowers. Example: Vallisneria, Hydrilla. In vallisneria, the male flower is submerged in the water and female flower with long stalk floats on the surface. As the plant gets mature, the male flower gets detached and floats on water. With the help of water currents, when male flower comes in contact with the female flower, the transfer of pollen grains from male flower to the stigma of female flower takes place. These flowers also produce pollen grains in large quantity.