Number of chromosomes in nucellus is 24. Number of chromosomes in microspore mother cell would be

Options

A. 36
B. 24
C. 30
D. 12

Answer

To determine the number of chromosomes in the microspore mother cell given that the number of chromosomes in the nucellus is 24, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Nucellus Chromosome Count**: We are given that the number of chromosomes in the nucellus is 24.

2. **Understand the Nucellus Ploidy**: The nucellus is part of the ovule and is diploid (2n). Therefore, the chromosome count of 24 indicates that the nucellus has a diploid set of chromosomes.

3. **Determine the Microspore Mother Cell Ploidy**: The microspore mother cell (also known as the pollen mother cell) is also diploid (2n). This is because it arises from the same tissue as the nucellus and is involved in the formation of pollen grains through meiosis.

4. **Conclusion on Chromosome Count**: Since the microspore mother cell is diploid and we have established that the diploid number is 24 (from the nucellus), the number of chromosomes in the microspore mother cell is also 24.

5. **Select the Correct Option**: Among the options provided (36, 24, 30, and 20), the correct answer is 24.

### Final Answer:
The number of chromosomes in the microspore mother cell is **24**.

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