Which one of the following pairs is wrongly matched?

Options

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

Answer

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

### Step-by-Step Solution:

1. **Option A: Veroid and RNA**
- Veroids are indeed single-stranded RNA molecules. This pairing is correctly matched.

2. **Option B: Mustard and Synergids**
- Mustard is an angiosperm that undergoes double fertilization. Synergids are present in the embryo sac of angiosperms and assist in the fertilization process. This pairing is also correctly matched.

3. **Option C: Ginkgo and Archegonia**
- Ginkgo is a gymnosperm that has both archegonia (female reproductive structures) and antheridia (male reproductive structures). This pairing is correctly matched as well.

4. **Option D: Salvinia and Prothallus**
- Salvinia is a heterosporous water fern. It does not produce a prothallus in the same way that some other ferns do. Instead, its reproductive structures are found in sporocarps. Therefore, this pairing is wrongly matched.

### Conclusion:
The wrongly matched pair is **Option D: Salvinia and Prothallus**.