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In most of the water pollinated species ...

In most of the water pollinated species pollen grains are protected from wetting by a

A

Mucilagenous covering

B

Agar coating

C

Algin coating

D

Pectose coating

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Water Pollination**: Water pollination is a process where pollen grains are transferred from the male reproductive part (anther) to the female reproductive part (stigma) through water. This is less common compared to wind pollination. 2. **Characteristics of Pollen Grains in Water Pollinated Species**: In water-pollinated species, pollen grains have unique adaptations. They are often elongated or ribbon-like, which helps them to move with water currents. 3. **Protection Against Wetting**: Since these pollen grains are transported in water, they need protection from becoming waterlogged or wet, which could hinder their ability to fertilize the ovule. 4. **Mucilage as a Protective Covering**: The protective covering that prevents wetting of pollen grains in water-pollinated species is a mucilaginous layer. Mucilage is a gelatinous substance that helps maintain the buoyancy and motility of the pollen grains in water. 5. **Conclusion**: Therefore, the correct answer to the question is that pollen grains in most water-pollinated species are protected from wetting by a mucilaginous covering. ---
**Step-by-Step Solution:** 1. **Understanding Water Pollination**: Water pollination is a process where pollen grains are transferred from the male reproductive part (anther) to the female reproductive part (stigma) through water. This is less common compared to wind pollination. 2. **Characteristics of Pollen Grains in Water Pollinated Species**: In water-pollinated species, pollen grains have unique adaptations. They are often elongated or ribbon-like, which helps them to move with water currents. 3. **Protection Against Wetting**: Since these pollen grains are transported in water, they need protection from becoming waterlogged or wet, which could hinder their ability to fertilize the ovule. ...
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How many of the following statements (s) is/are correct about pollination ? I. In Vallisneria and Zostera , the flowers emerge above the level of water and are pollinated by insects or wind. II: In most of the water pollinated species , pollen grains are protected from wetting by a mucilaginous covering. III. Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly dicotydons.

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