Why do pollen grains of vallisneria have a mucilaginous covering?
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Vallisneria is an aquatic plant in which pollination occurs by water. Hence, thepollen grains of Vallisneria arecovered with a mucilaginous coveringto protect them from wetting by water.
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As the pollination of Vallisneria takes place by means of water.
- the pollen grains are covered by mucilaginous coating that protects the pollen from water.
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