The pollination in Vallisneria is

Options

A. epihydrophilous
B. hypohydrophilous
C. anemophilous
D. entomophilous

Answer

**Step-by-Step Solution:**

1. **Understanding Pollination in Vallisneria:**
- Vallisneria is a type of aquatic plant that reproduces sexually. Pollination in Vallisneria occurs through water, which is a unique characteristic compared to many terrestrial plants.

2. **Identifying the Type of Pollination:**
- The term "epihydrophilous" refers to pollination that occurs on the surface of the water. In Vallisneria, the female flowers are positioned above the water surface, while the male flowers are submerged.

3. **Mechanism of Pollination:**
- The male flowers release pollen grains into the water. These pollen grains float on the surface of the water due to their buoyancy and are carried by water currents.

4. **Reaching the Female Flower:**
- The female flower has a long stalk (pedicel) that extends to the water's surface. As the pollen grains are carried by the water currents, some of them reach the stigma of the female flower.

5. **Conclusion:**
- Based on the mechanism of pollination in Vallisneria, the correct answer is that the pollination is "epihydrophilous," which means it occurs on the surface of the water.

**Final Answer:**
The pollination in Vallisneria is epihydrophilous.

---