Question

Hypohydrophily occurs in
A) Ceratophyllum
B) Lemna
C) Vallisneria
D) Nelumbium

Answer 1

Hint: Hypohydrophily is the type of pollination in flowering plants. Pollination is the process by which reproduction takes place in flowers and this is defined as pollen grains are transferred from opened anther of the stamen to stigma of the carpel.

Complete answer:
>In flowering plants, reproductive organs are flowers.Reproduction takes place through pollination and mainly pollination occurs by two ways:-Self-pollination and Cross pollination.
>Self-pollination defined as the transferred the anther of the stamen to stigma of the carpel of same flower or similar genetics. This is further two types :- Autogamy and Geitonogamy.
>Cross pollination defined as the transferred the anther of the stamen of one plant to stigma of the carpel of another plant. This is further two types:- Abiotic (Anemophily and Hydrophily) and Biotic (Entomophily, Ornithophily and Chiropterophily).
>Hydrophily means in greek Hydro stands for water and philein stands for love. It is defined as the type of pollination which occurs by the water.The mode of transfer of pollen grains is water.
>Hypohydrophily stands when pollination takes place in submerged plants.

Additional information:
Water pollination occurs in these flowers:
>Small, colourless and odourless
>Stigma small
>Pollen grains, stigma, corolla and calyx are unwettable.

Hence the correct answer is option ‘A’.

Note:In Ceratophyllum flowers of male break and reach to the water surface and open up then pollen grains sink in water make connect with stigma and pollination occurs under water.