If aleurone layer contains 12 chromosomes, the ovary wall will contain:

Options

A. 12
B. 18
C. 25
D. 8

Answer

To solve the question, "If the aleurone layer contains 12 chromosomes, the ovary wall will contain:", we need to understand the relationship between the aleurone layer, the endosperm, and the ovary wall in terms of their chromosomal content.

### Step-by-Step Solution:

1. **Identify the Chromosome Count in the Aleurone Layer**:
- The aleurone layer is associated with the endosperm and has been stated to contain 12 chromosomes.

2. **Determine the Ploidy Level of the Aleurone Layer**:
- The aleurone layer is derived from the endosperm, which is triploid (3N). This means that the chromosome count in the aleurone layer also reflects this triploid nature.

3. **Calculate the Haploid Number (N)**:
- Since the aleurone layer is triploid (3N) and contains 12 chromosomes, we can find the haploid number (N) by using the formula:
\[ 3N = 12 \]
Dividing both sides by 3 gives:
\[ N = \frac{12}{3} = 4 \]

4. **Determine the Ploidy Level of the Ovary Wall**:
- The ovary wall is part of the sporophyte generation and is diploid (2N).

5. **Calculate the Chromosome Count in the Ovary Wall**:
- To find the total number of chromosomes in the ovary wall, we use the haploid number we just calculated:
\[ 2N = 2 \times N = 2 \times 4 = 8 \]

6. **Conclusion**:
- Therefore, the ovary wall will contain 8 chromosomes.

### Final Answer:
The ovary wall will contain **8 chromosomes**.

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