An angiospermic leaf carries 16 chromosomes ,The number of chromosomes in its endosperm will be :

Options

A. 8
B. 12
C. 16
D. 24

Answer

To determine the number of chromosomes in the endosperm of an angiospermic plant that has a leaf with 16 chromosomes, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chromosome Number in the Leaf:**
- The question states that the angiospermic leaf carries 16 chromosomes. This indicates that the leaf cells are diploid (2n), meaning they contain two sets of chromosomes.

2. **Determine the Ploidy Level:**
- Since the leaf is diploid (2n = 16), we can find the haploid number (n) by dividing the diploid number by 2:
\[ n = \frac{16}{2} = 8 \]
- So, the haploid number of chromosomes is 8.

3. **Understand the Formation of Endosperm:**
- In angiosperms, the endosperm is formed through a process called triple fusion during fertilization. This involves the fusion of one male gamete with the egg cell (ovum) and the fusion of another male gamete with the two polar nuclei present in the central cell.

4. **Calculate the Chromosome Number in Endosperm:**
- The endosperm is triploid (3n) because it contains three sets of chromosomes: one from the male gamete and two from the polar nuclei.
- Therefore, the chromosome number in the endosperm can be calculated as:
\[ 3n = 3 \times 8 = 24 \]

5. **Conclusion:**
- The number of chromosomes in the endosperm will be 24.

### Final Answer:
The number of chromosomes in the endosperm will be **24**.

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