Which one is modified leaf

Options

A. Pitcher of Nepenthes
B. Tendril of Pisum sativum
C. Spine of Cactus
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which of the given options represents a modified leaf. We need to analyze each option to determine if it is a modification of a leaf.

2. **Analyzing Option A - Nepenthes**:
- The Nepenthes plant, commonly known as the pitcher plant, has leaves that are modified into a structure called a pitcher.
- The pitcher is used to capture prey, particularly insects, which is a characteristic of insectivorous plants.
- Therefore, the pitcher of Nepenthes is indeed a modified leaf.

3. **Analyzing Option B - Pisum sativum**:
- In Pisum sativum, also known as sweet pea, the upper leaflets of the plant are modified into tendrils.
- These tendrils provide support to the plant, allowing it to climb and grow effectively.
- Thus, the tendril of Pisum sativum is also a modification of a leaf.

4. **Analyzing Option C - Spine of Cactus**:
- In cacti, the leaves are modified into spines.
- This adaptation is crucial for xerophytic conditions, as it helps reduce water loss and provides protection to the plant.
- Therefore, the spine of a cactus is another example of a modified leaf.

5. **Conclusion**:
- Since all three options (A, B, and C) represent modifications of leaves, the correct answer is "all of the above."

**Final Answer**: All of the above (Nepenthes, Tendril of Pisum sativum, Spine of Cactus) are modified leaves.

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