The plant X is found in abundance in desert areas which get meagre rainfall. The modified leaves of this plant can reduce the loss of water from this plant by transpiration. This plant has long roots which go deep into the soil so as to obtain water.
Which part/parts of this plants take part in photosynthesis ?

Answer

### Step-by-Step Solution:

1. **Understanding the Plant's Environment**: The plant X is found in desert areas with very little rainfall. This indicates that it has adapted to survive in harsh conditions.

2. **Identifying Plant Adaptations**: The plant has modified leaves that help reduce water loss through transpiration. This suggests that the leaves may not be performing the typical function of photosynthesis as seen in other plants.

3. **Examining the Structure of the Plant**: The plant has long roots that go deep into the soil to absorb water. This adaptation is crucial for survival in arid conditions.

4. **Understanding Photosynthesis**: Photosynthesis is the process by which plants make their food using carbon dioxide, water, and sunlight, primarily occurring in the green parts of the plant due to the presence of chlorophyll.

5. **Identifying Photosynthetic Parts**: In typical plants, photosynthesis occurs mainly in the leaves. However, in the case of plant X (which resembles a cactus), the leaves are modified into spines, and the stem is green.

6. **Conclusion**: Since the leaves are modified and not performing photosynthesis, the green stem of the plant takes over this function. Therefore, the parts of plant X that take part in photosynthesis are the stem and branches.

### Final Answer:
The parts of the plant X that take part in photosynthesis are the **stem and branches**.

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