Name the following:
Pollen of flower cannot reach the stigma of the same flower.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes a situation where the pollen of a flower cannot reach the stigma of the same flower.

2. **Identifying Key Terms**: The key terms in the question are "pollen," "stigma," and "same flower." This indicates that we are looking for a reproductive condition in flowering plants.

3. **Explaining the Concept**: In flowering plants, for fertilization to occur, pollen must land on the stigma. However, in some cases, the anther (which produces pollen) and the stigma (which receives pollen) mature at different times.

...