Which one of the following pairs is wrongly matched

Options

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

Explanation

To determine which pair is wrongly matched, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- Salvinia - Prothelis
- Viroids - RNA
- Mustard - Synergids
- Zinc - Archegonia

2. **Analyze Each Pair**:
- **Salvinia - Prothelis**:
- Salvinia is a type of fern that produces two kinds of spores (microspores and megaspores), which means it is heterosporous.
- Prothelis refers to the gametophyte stage of ferns, which typically develops from a single spore and is homosporous.
- Therefore, this pair is **wrongly matched** because Salvinia (heterosporous) does not correspond to Prothelis (homosporous).

- **Viroids - RNA**:
- Viroids are indeed the smallest infectious pathogens, and their genetic material is composed of single-stranded circular RNA.
- This pair is **correctly matched**.

- **Mustard - Synergids**:
- Mustard is an angiosperm, and synergids are specialized cells found in the ovule of angiosperms, located adjacent to the egg cell.
- This pair is **correctly matched**.

- **Zinc - Archegonia**:
- Ginkgo, which is a gymnosperm, has archegonia as its female reproductive structure. However, Zinc is not directly related to archegonia; it is a mineral and does not form a biological pair with archegonia.
- This pair is also **correctly matched** in the context of Ginkgo, but not with Zinc.

3. **Conclusion**: The pair that is wrongly matched is **Salvinia - Prothelis**.

### Final Answer:
The wrongly matched pair is **Salvinia - Prothelis**.