Which is wrongly matched

Options

A. Root - Exarch protoxylem
B. Cassia- Imbricate aestivation
C. Root pressure- Guttation
D. Puccinia- Smut.

Answer

To determine which option is wrongly matched, we need to analyze each option provided in the question. Here’s a step-by-step breakdown of the analysis:

### Step 1: Analyze the first option - Root and Exarch Protoxylem
- **Definition**: Exarch protoxylem refers to the arrangement of xylem in which the protoxylem is located towards the periphery of the root or stem, while the metaxylem is towards the center.
- **Conclusion**: Roots of vascular plants typically exhibit exarch development. Therefore, this option is correctly matched.

### Step 2: Analyze the second option - Cassia and Imbricate Estivation
- **Definition**: Imbricate estivation is a type of floral arrangement where petals overlap in a specific manner, with one petal completely inside and another completely outside.
- **Conclusion**: Cassia is known to exhibit imbricate estivation. Thus, this option is also correctly matched.

### Step 3: Analyze the third option - Root Pressure and Guttation
- **Definition**: Guttation is the process of water loss in liquid form through specialized structures called hydathodes, often facilitated by root pressure.
- **Conclusion**: Root pressure does indeed contribute to guttation, especially under conditions of high humidity. Therefore, this option is correctly matched.

### Step 4: Analyze the fourth option - Paustinia and Smut
- **Definition**: Paustinia is actually classified as a rust fungus, while smut fungi are caused by Eustilago.
- **Conclusion**: Since Paustinia is not a smut but a rust fungus, this option is incorrectly matched.

### Final Conclusion
The wrongly matched pair is **Option 4: Paustinia and Smut**.

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