Stems of which plant contain chlorophyll & become flat to carry out photosynthesis ?

Options

A. Ginger
B. Turmeric
C. Opuntia
D. Colocasia

Answer

To answer the question regarding which plant's stems contain chlorophyll and become flat to carry out photosynthesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a plant whose stems have chlorophyll and are flat, allowing them to perform photosynthesis.

2. **Identifying Plant Adaptations**: In arid regions, many plants adapt to conserve water. One such adaptation is the reduction or modification of leaves. In some cases, leaves may become spines or may be completely absent.

3. **Role of the Stem**: When leaves are reduced or absent, the stem takes on the role of photosynthesis. This means that the stem must have chlorophyll (the green pigment necessary for photosynthesis) and may become flattened to increase surface area for light absorption.

4. **Identifying the Plant**: A well-known example of a plant that exhibits these characteristics is **Opuntia**, commonly known as the prickly pear cactus. The stems of Opuntia are flattened and contain chlorophyll, allowing them to perform photosynthesis effectively.

5. **Conclusion**: Therefore, the answer to the question is **Opuntia**.

### Final Answer:
The stems of the plant **Opuntia** contain chlorophyll and become flat to carry out photosynthesis.

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