When pollen grains of a flower pollinate the stigma of another flower of the same plant,it is called

Anemophily is $NOT$ observed in

Explain self-pollination in cleistogamous flowers.

Ornithophily refers to the pollination by which of the following?

In which plant is pollen released at the water surface and carried passively by water currents to achieve pollination?

In plant species where pollen grains are covered by a mucilaginous layer to protect them from moisture,which agent is responsible for pollination?