When transfer of pollen grains occurs over the surface of water , it is called

Options

A. Entomophily
B. Epihydrophily
C. Hypohydrophily
D. Myrmecophily

Answer

To solve the question "When transfer of pollen grains occurs over the surface of water, it is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pollination**:
- Pollination is the process where pollen grains from the male part of a flower (anther) are transferred to the female part (stigma) of the same or another flower.

**Hint**: Remember that pollination involves the movement of pollen grains from one part of a flower to another.

2. **Identifying the Medium**:
- The question specifies that the transfer occurs over the surface of water. This indicates that water is the medium facilitating the transfer of pollen grains.

**Hint**: Think about how different mediums (like air, water, or insects) can affect how pollen is transferred.

3. **Types of Pollination**:
- There are various types of pollination based on the medium. For instance, pollination can occur through wind (anemophily), insects (entomophily), and water (hydrophily).

**Hint**: Recall the different types of pollination and their associated mediums.

4. **Specific Type of Hydrophily**:
- In the context of water, there are two types of hydrophilic pollination:
- **Epihydrophily**: Pollination that occurs on the surface of the water.
- **Hypohydrophily**: Pollination that occurs beneath the surface of the water.

**Hint**: Focus on the distinction between epihydrophily and hypohydrophily based on their location relative to the water surface.

5. **Determining the Correct Term**:
- Since the question specifically mentions that the transfer of pollen grains occurs over the surface of water, the correct term to describe this process is **epihydrophily**.

**Hint**: Remember that "epi-" means "on" or "above," which is key to identifying the correct term.

### Final Answer:
The transfer of pollen grains occurring over the surface of water is called **epihydrophily**.