Name the plant in which, the leaves are short lived and petiole modify in leafy structure

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a plant where the leaves are short-lived and the petiole is modified into a leafy structure.

2. **Identifying Leaf Modification**: In certain plants, leaves can undergo modifications due to environmental conditions. In this case, the leaves are modified into spines. This adaptation helps the plant survive in dry conditions.

3. **Role of the Petiole**: The petiole, which is the stalk that attaches the leaf blade to the stem, becomes modified as well. In this scenario, the petiole expands and takes on a leaf-like appearance, allowing it to perform photosynthesis.

4. **Environmental Conditions**: These modifications are typically found in plants that live in arid environments where water is scarce. The changes help reduce water loss and provide protection against herbivores.

5. **Identifying the Plant**: One well-known example of such a plant is **Acacia**. Acacia species exhibit these adaptations, where leaves are short-lived and the petiole is modified to resemble a leaf.

6. **Conclusion**: Therefore, the answer to the question is **Acacia**.

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