If there are 40 pollen mother cells in anther, what will be the number of pollen grains?

Options

A. 160
B. 120
C. 80
D. 40

Answer

To solve the question of how many pollen grains are produced from 40 pollen mother cells (PMCs), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pollen Mother Cells**: Recognize that pollen mother cells (also known as microspore mother cells) are diploid (2N) cells that undergo meiosis to produce pollen grains.

2. **Meiosis Process**: Recall that during meiosis, one pollen mother cell divides to produce four haploid (N) pollen grains. This is a crucial point because it tells us how many pollen grains result from one PMC.

3. **Calculating Pollen Grains from One PMC**: Since one pollen mother cell produces four pollen grains, we can express this as:
\[ \text{Pollen grains from 1 PMC} = 4 \]

4. **Calculating Total Pollen Grains from 40 PMCs**: Now, if there are 40 pollen mother cells, we can calculate the total number of pollen grains produced by multiplying the number of PMCs by the number of pollen grains produced by each PMC:
\[ \text{Total Pollen Grains} = \text{Number of PMCs} \times \text{Pollen grains from 1 PMC} \]
\[ \text{Total Pollen Grains} = 40 \times 4 = 160 \]

5. **Final Answer**: Therefore, the total number of pollen grains produced from 40 pollen mother cells is 160.

### Conclusion:
The answer to the question is 160 pollen grains.