Photosynthesis in opuntia is done by

Options

A. leaves
B. stem
C. roots
D. shoot

Answer

**Step-by-Step Solution:**

1. **Identify the Plant Type**: Recognize that Opuntia is a type of cactus. Cacti are known for their adaptations to arid environments, which include modifications in their structure.

2. **Understand Photosynthesis**: Photosynthesis is the process by which plants convert light energy into chemical energy, primarily using chlorophyll to capture sunlight.

3. **Examine Plant Structure**: In Opuntia, the typical structure associated with photosynthesis (leaves) is either absent or very reduced. Instead, Opuntia has modified stems.

4. **Identify the Photosynthetic Organs**: The main organs responsible for photosynthesis in Opuntia are the green, fleshy, succulent stems known as phylloclades. These stems are thick and flattened, allowing them to perform the function of photosynthesis.

5. **Conclude the Answer**: Since the leaves are either absent or not functional for photosynthesis in Opuntia, the stems are the primary organs that carry out this process.

**Final Answer**: Photosynthesis in Opuntia is done by the stems.

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