In which plants leaves are small, compound, short lived & petioles expand and become green to synthesise food.

Options

A. Pitcher plants
B. Bladder worts
C. Australian Acacia
D. Venus fly trap

Answer

To answer the question, "In which plants are leaves small, compound, short-lived, and petioles expand and become green to synthesize food?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Leaf Structure**:
- The question describes leaves that are small, compound, and short-lived. This indicates that the leaves do not last long and are made up of multiple leaflets.

2. **Identifying Petiole Function**:
- The petioles of these plants expand and become green, which suggests that they take on the role of photosynthesis, typically performed by leaves.

3. **Recognizing Plant Examples**:
- We need to identify plants where the petiole performs the function of leaves. The key plant that fits this description is **Australian Acacia**.

4. **Characteristics of Australian Acacia**:
- In Australian Acacia, the leaves are indeed small and compound. They are short-lived and fall off quickly. The petioles, which are the stalks that attach the leaf to the stem, expand and become flattened, turning green to carry out photosynthesis.

5. **Conclusion**:
- Therefore, the correct answer to the question is **Australian Acacia**, as it exhibits all the mentioned characteristics.

### Final Answer:
The plant in which leaves are small, compound, short-lived, and petioles expand and become green to synthesize food is **Australian Acacia**.

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