In which of these options, the plants are correctly matched with the modification seen in them ?

Options

A. (i)
B. (ii)
C. (iii)
D. (iv)

Answer

To solve the question of which plants are correctly matched with their modifications, we will analyze each option step by step.

### Step 1: Understand the terms
- **Phylloclade**: A modification of the stem that is flattened and performs photosynthesis, typically seen in cacti.
- **Phyllode**: A modified leaf that is flattened and functions similarly to a leaf, often found in plants like Acacia.
- **Cladode**: A stem that is flattened and performs photosynthesis, similar to phylloclades.

### Step 2: Analyze the options
1. **Opuntia - Phylloclade**:
- Opuntia is a cactus, and its stems are modified into flat structures that perform photosynthesis. This is a correct match.

2. **Asparagus - Phyllode**:
- Asparagus has stalk-like structures that function as leaves, making this a correct match as well.

3. **Acacia - Cladode**:
- Acacia plants have flattened stems that act like leaves, which is a correct match.

4. **Casuarina - Phyllode**:
- Casuarina has phyllodes, not phylloclades. This is incorrect.

5. **Euphorbia - Cladode**:
- Euphorbia typically has structures that are classified as phylloclades, not cladodes. This is incorrect.

### Step 3: Conclusion
Based on the analysis, the first option (Opuntia - Phylloclade, Asparagus - Phyllode, Acacia - Cladode) is the only correct match.

### Final Answer
The correct option is **Option 1**.

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