In over 40% of angiosperms, pollen grains are shed at 3 celled stage, these 3 cells are :

Options

A. Vegetative cell, Tube cell and Generative cell
B. One generative cell and two tube cells
C. One vegetative cell and two gametes
D. One generative cell and two gametes

Answer

To answer the question regarding the three cells in pollen grains shed at the 3-celled stage in over 40% of angiosperms, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pollen Grain Development**:
- Pollen grains develop from microspores through a process called microgametogenesis.

2. **Cell Division in Pollen Grains**:
- In many angiosperms, pollen grains can be shed at different developmental stages. The two main stages are the 2-celled stage and the 3-celled stage.

3. **Identifying the 2-Celled Stage**:
- In the 2-celled stage, the pollen grain consists of one vegetative cell and one generative cell.

4. **Identifying the 3-Celled Stage**:
- In the 3-celled stage, the pollen grain has one vegetative cell and two generative cells.
- The generative cell divides to form two male gametes.

5. **Conclusion**:
- Therefore, in the 3-celled stage, the three cells are:
- One vegetative cell
- Two male gametes (derived from the division of the generative cell)

### Final Answer:
In over 40% of angiosperms, pollen grains are shed at the 3-celled stage, which consists of:
- 1 vegetative cell
- 2 male gametes

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