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When the leaves are small and short live...

When the leaves are small and short lived, the petioles expand and become green to synthesise food as in

A

Cactus

B

Euphorbia

C

Ruscus

D

Australian Acacia

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Question**: The question asks about a plant where the leaves are small and short-lived, and the petioles expand and become green to synthesize food. 2. **Analyzing the Options**: - **Cactus**: In cacti, leaves are modified into spines to reduce water loss, and the stem performs photosynthesis. Thus, this option does not fit the description. - **Euphorbia**: Similar to cacti, Euphorbia plants have leaves that are modified into spines, and they do not have expanded green petioles for photosynthesis. So, this option is also not correct. - **Ruscus**: In Ruscus, the leaves are modified into scales, which again does not match the description of expanded green petioles. - **Australian Acacia**: In this plant, the leaves are indeed small and short-lived. The petioles expand and flatten, taking on a green color to perform photosynthesis. 3. **Conclusion**: Based on the analysis, the correct answer is **Australian Acacia**, where the petioles are modified to synthesize food due to the small and short-lived leaves. ### Final Answer: The correct answer is **Australian Acacia**. ---
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