Distinguish between: Hypohydrophily – Epihydrophily - Vidyadip

Question

Distinguish between: Hypohydrophily – Epihydrophily

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Answer

Hypohydrophily	Epihydrophily
1. Pollination takes place below the surface of water.	1. Pollination takes place on the surface of water.
2. Pollen grains are heavier and they sink in water.	2. Pollen grains float on the water surface.
3. Pollens are long, ribbon like without exine.	3. Pollens have specific gravity equal to water.
4. E.g. Zostera (sea grass)	4. E.g. Vallisneria

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