Which on eof the following statements is correct with respect to the synthesis of starch and sucrose

Options

A. starch is sythesizzed in the mitochondria and sucrose in the cytosol
B. starch is synthesized in the cytosol and sucrose in the chloroplast
C. starch is synthesized in the chloroplase and sucrose in the mitochondira
D. starch is sythesized I the chloroplast and sucrose in the cytosol

Answer

To determine which statement is correct regarding the synthesis of starch and sucrose, we can analyze each option based on our understanding of plant physiology.

### Step-by-Step Solution:

1. **Understanding Starch Synthesis**:
- Starch is a polysaccharide that is primarily synthesized in the chloroplasts of plant cells. This process occurs during photosynthesis when glucose is produced.

2. **Understanding Sucrose Synthesis**:
- Sucrose is a disaccharide formed from glucose and fructose. It is synthesized in the cytosol (the liquid part of the cytoplasm) of plant cells.

3. **Analyzing Each Statement**:
- **Option A**: "Starch is synthesized in the mitochondria and sucrose in the cytosol."
- This statement is incorrect. Starch is not synthesized in mitochondria; it is synthesized in chloroplasts.

- **Option B**: "Starch is synthesized in the cytosol."
- This statement is also incorrect. As mentioned, starch synthesis occurs in chloroplasts, not in the cytosol.

- **Option C**: "Sucrose is synthesized in the mitochondria."
- This statement is incorrect. Sucrose is synthesized in the cytosol, not in the mitochondria.

- **Option D**: "Starch is synthesized in the chloroplast and sucrose in the cytosol."
- This statement is correct. Starch is indeed synthesized in the chloroplasts, and sucrose is synthesized in the cytosol.

4. **Conclusion**:
- The correct statement regarding the synthesis of starch and sucrose is **Option D**: "Starch is synthesized in the chloroplast and sucrose in the cytosol."