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.

Options

A. 1
B. 2
C. 3
D. 0

Answer

To solve the question regarding the correctness of the statements about pollination, let's analyze each statement step by step.

### Step 1: Analyze Statement I
**Statement I:** "In Vallisneria and Zostera, the flowers emerge above the level of water and are pollinated by insects or wind."

- **Analysis:** This statement is incorrect. Vallisneria and Zostera are aquatic plants, and their flowers are typically submerged in water. They are primarily pollinated by water currents rather than by insects or wind. Therefore, this statement is false.

### Step 2: Analyze Statement II
**Statement II:** "In most of the water pollinated species, pollen grains are protected from wetting by a mucilaginous covering."

- **Analysis:** This statement is correct. Many water-pollinated plants have pollen grains that are coated with a mucilaginous substance, which helps protect them from wetting when they are submerged in water. This adaptation is crucial for successful fertilization in aquatic environments. Therefore, this statement is true.

### Step 3: Analyze Statement III
**Statement III:** "Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly dicotyledons."

- **Analysis:** This statement is partially correct but misleading. While it is true that water pollination is rare, it is primarily found in monocots (like Vallisneria and Zostera) rather than dicotyledons. Thus, the claim that it is mostly dicotyledons is incorrect. Therefore, this statement is false.

### Conclusion
After analyzing all three statements:
- Statement I: False
- Statement II: True
- Statement III: False

Thus, only **one statement** (Statement II) is correct.

### Final Answer
The number of correct statements about pollination is **1**.

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