The wrongly mathced pair w.r.t. the organisms and their probable time of evolution is

Options

A. Jawless fish-around 350 mya
B. Lobefins-around 350 mya
C. Fish-like giants reptiles-around 320 mya
D. Sea weeds-around 320 mya

Answer

To determine the wrongly matched pair with respect to the organisms and their probable time of evolution, we need to analyze each option provided in the question:

1. **Jawless Fish - 350 million years ago**:
- Jawless fish, belonging to the group of Cyclostomes, are indeed known to have existed around this time. This pairing is correct.

2. **Lophins - 350 million years ago**:
- Lophins, which are a type of fish, also existed around this time. Thus, this pairing is also correct.

3. **Fish-like Giant Reptiles - 320 million years ago**:
- This option refers to ichthyosaurs, which are indeed fish-like reptiles. However, ichthyosaurs first appeared around 200 million years ago, not 320 million years ago. Therefore, this pairing is incorrect.

4. **Seaweeds - 320 million years ago**:
- Seaweeds are known to have arisen around this time, making this pairing correct as well.

Based on this analysis, the wrongly matched pair with respect to the organisms and their probable time of evolution is:

**Fish-like Giant Reptiles - 320 million years ago.**

### Summary of Steps:
1. Identify the organisms and their associated time periods.
2. Verify the historical accuracy of each pairing.
3. Determine which pairing does not match the known evolutionary timeline.