Phostosynthetic function of the Cactus plant is done by

Options

A. leaf
B. phyllode
C. bracts
D. phylloclade

Answer

To answer the question regarding the photosynthetic function of the cactus plant, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding the Environment of Cactus**:
- Cacti are primarily found in arid or desert conditions where water is scarce. This environment influences their adaptations for survival.

2. **Identifying Leaf Modifications**:
- In cacti, the leaves are modified into spines to reduce water loss and protect the plant from herbivores. Therefore, traditional leaves are not involved in photosynthesis.

3. **Role of the Stem in Photosynthesis**:
- In cacti, the stem takes on the role of photosynthesis. The stem is adapted to perform the functions typically carried out by leaves in other plants.

4. **Defining Phylloclade**:
- The modified stem that carries out photosynthesis in cacti is known as a phylloclade. This structure is flattened and green, allowing it to perform photosynthesis effectively.

5. **Differentiating Other Terms**:
- **Phyllode**: A modified petiole that functions like a leaf, found in some other plants (e.g., Acacia).
- **Bracts**: Modified leaves that are often found at the base of flowers, not involved in photosynthesis in the context of cacti.

6. **Conclusion**:
- The correct answer to the question is that the photosynthetic function of the cactus plant is performed by the **phylloclade**, which is a modified stem.

### Final Answer:
The photosynthetic function of the cactus plant is done by the **phylloclade**.

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