A pollen grain in angiosperm at the time of dehiscence from an anther could be 2- celled or 3 celled . Explain . How are the cells placed within the pollen grain when shed at -a 2 - celled stage ?

Explanation

### Step-by-Step Solution:

1. **Understanding Pollen Grain Structure**:
- Pollen grains in angiosperms can be either 2-celled or 3-celled at the time of dehiscence from the anther. This variation depends on the species of the plant.

2. **Mature Pollen Grain**:
- When a pollen grain is mature and ready for dehiscence, it can exist in two forms:
- **2-celled stage**: This is when the pollen grain contains two distinct cells.
...