Which one of the following pairs is wrongly matched?

Options

A. Ginkgo - Archegonia
B. Salvinia - Prothallus
C. Viroids - RNA
D. Mustard - Synergids

Answer

To solve the question "Which one of the following pairs is wrongly matched?", we will analyze each pair provided in the options.

### Step-by-Step Solution:

1. **Identify the first pair: Ginkgo and Archegonia**
- Ginkgo is a gymnosperm, and gymnosperms do have archegonia, which are the female sex organs where egg cells are produced.
- **Conclusion**: This pair is correctly matched.

2. **Identify the second pair: Salvinia and Pteridophytes**
- Salvinia is indeed a type of pteridophyte. However, it is important to note that Salvinia is a heterosporous pteridophyte, meaning it produces two different types of spores (microspores and megaspores).
- Traditional pteridophytes are generally homosporous, producing only one type of spore.
- **Conclusion**: This pair is wrongly matched because Salvinia does not fit the general characteristic of homosporous pteridophytes.

3. **Identify the third pair: Viroids and Infectious Agents**
- Viroids are indeed infectious agents, and they are composed of RNA. They are known to cause diseases in plants.
- **Conclusion**: This pair is correctly matched.

4. **Identify the fourth pair: Mustard and Angiosperm**
- Mustard is a flowering plant and is classified as an angiosperm. Angiosperms are characterized by the presence of flowers and seeds enclosed within a fruit.
- **Conclusion**: This pair is correctly matched.

### Final Conclusion:
The second pair, Salvinia and Pteridophytes, is the wrongly matched pair.