The transfer of pollen grains from anther to stigma is called ________.

Explanation

**Step-by-Step Solution:**

1. **Identify the Parts Involved**: The question refers to two specific parts of a flower: the anther and the stigma. The anther is the male reproductive part, while the stigma is the female reproductive part.

2. **Understand the Function of Each Part**: The anther produces pollen grains, which contain the male gametes (sperm cells). The stigma is where these pollen grains land to initiate the reproductive process.

3. **Define the Process**: The transfer of pollen grains from the anther to the stigma is a crucial step in the reproductive cycle of flowering plants.

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