The carbohydrates synthesized in the leaves are transported through sieve tubes most commonly in the form of

Options

A. glucose
B. starch
C. sucrose
D. cellulose

Answer

**Step-by-Step Solution:**

1. **Understanding Carbohydrate Synthesis**:
- Plants synthesize carbohydrates in their leaves through the process of photosynthesis. During this process, they convert carbon dioxide and water into glucose using sunlight and chlorophyll.

2. **Role of Phloem**:
- The synthesized carbohydrates are transported through the plant via the phloem tissue, which consists of sieve tubes. The phloem is responsible for the distribution of food (carbohydrates) throughout the plant.

3. **Form of Carbohydrates**:
- The primary carbohydrate produced during photosynthesis is glucose (C6H12O6). However, glucose is highly reactive and not suitable for long-distance transport within the plant.

4. **Conversion to Sucrose**:
- To facilitate safe transport, plants convert glucose into sucrose (C12H22O11). Sucrose is a non-reducing sugar, which means it is more stable and less reactive than glucose. This conversion also reduces the amount of water associated with the carbohydrate, making it more compact for transport.

5. **Conclusion**:
- Therefore, the carbohydrates synthesized in the leaves are most commonly transported through sieve tubes in the form of sucrose.

**Final Answer**: The carbohydrates synthesized in the leaves are transported through sieve tubes most commonly in the form of **sucrose**.

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