Question

Write the difference between epihydrophily and hypohydrophily

Answer 1

Hydrophily is a relatively uncommon type of pollination in which pollen is dispersed by the flow of water, most notably in rivers and streams. There are two types of hydrophilous species: I Those that spread their pollen to the water's surface. (ii) Those who spread it beneath the surface.

Complete answer:

Epihydrophily	Hypohydrophily
Epihydrophily occurs when pollination occurs at the water's surface.	Hypohydrophily occurs when pollination occurs beneath the water's surface.
Plants with epihydrophily live above the water's surface.	Hypodydrophilia can be found in the plant that grows beneath the water.
The example of epihydrophily is Vallisneria	An example of hypohydrophily is the Ceratophyllum.
Vallisneria pollination is epihydrophily. It is a type of hydrophily that occurs on the water's surface. Because the female flower has a very long pedicel, it can reach the water's surface. They are passively carried by water currents, and some of them make it to the female flowers and the stigma.	The male flowers of Ceratophyllum break and dehisce on the water's surface. Pollen grains sink into the water and come into contact with the stigma, resulting in pollination under water.
Female Vallisneria flowers do not detach. They are raised on long stalks above the water's surface.	Hypo Hydrophilic plants produce needle-like pollen grains.
Male flowers in Vallisneria float on the water's surface after becoming detached from the plant.	These pollen grains are devoid of exine and have the same specific gravity as water. As a result, they float beneath the surface of the water.
Pollination occurs when pollen grains come into contact with the stigma.	Pollen grains coil around the stigma and deposit when they come into contact with it.

Note: Water pollinated plants do not invest in pollinator-attracting resources such as showy flowers, nectar, and scent. Instead, they produce pollen that is unwettable. Stigma lasts a long time and is difficult to remove. Flowers are generally unisexual.