In a flowering plant 2n = 24, the number of chromosomes in its endosperm will be :

Options

A. 18
B. 36
C. 20
D. 17

Answer

To solve the question regarding the number of chromosomes in the endosperm of a flowering plant with a diploid number of chromosomes (2n) equal to 24, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Diploid Number (2n):**
- The question states that in the flowering plant, the diploid number of chromosomes (2n) is 24.

2. **Calculate the Haploid Number (n):**
- The haploid number (n) is half of the diploid number.
- Therefore, \( n = \frac{2n}{2} = \frac{24}{2} = 12 \).

3. **Understand the Chromosomal Structure of Endosperm:**
- In flowering plants, the endosperm is typically triploid, which means it has three sets of chromosomes (3n).

4. **Calculate the Number of Chromosomes in the Endosperm:**
- Since we have already determined that the haploid number (n) is 12, we can calculate the number of chromosomes in the endosperm.
- Thus, \( 3n = 3 \times 12 = 36 \).

5. **Conclusion:**
- Therefore, the number of chromosomes in the endosperm of the flowering plant is 36.

### Final Answer:
The number of chromosomes in the endosperm will be **36** (Option B).

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