Phyllode is found in

Options

A. Asparagus
B. euphorbia
C. Australian Acacia
D. Opuntia

Explanation

### Step-by-Step Solution:

1. **Understanding the Term "Phyllode":**
- A phyllode is a modified leaf structure that performs the function of photosynthesis. In certain plants, the typical leaf structure is absent, and the petiole (the stalk that attaches the leaf blade to the stem) becomes flattened.

2. **Identifying Plants with Phyllodes:**
- Phyllodes are primarily found in several species of the genus *Acacia*, particularly those adapted to desert conditions, such as *Acacia longifolia*, *Acacia recurva*, and *Acacia auriculariformis*.

3. **Characteristics of Phyllodes:**
- In plants with phyllodes, the bipinnate lamina (the leaf blade) is absent. Instead, the flattened petiole and part of the rachis (the central axis of a pinnately compound leaf) take on the role of photosynthesis.
- Phyllodes are typically sickle-shaped and are oriented vertically to minimize water loss through transpiration.

4. **Comparison with Other Structures:**
- Other plants like *Euphorbia* and *Apunctia* have structures known as phylloclades, which are stem modifications that also perform photosynthesis but are not classified as phyllodes.
- *Asparagus* has cladodes, which are also stem modifications that serve a similar purpose but differ in structure and origin.

5. **Conclusion:**
- Based on the characteristics and examples discussed, the correct answer to the question "Phyllode is found in" is *Acacia* species, specifically those adapted to arid environments.

### Final Answer:
Phyllode is found in *Acacia* species, particularly in *Acacia longifolia*, *Acacia recurva*, and *Acacia auriculariformis*.

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