Select the incorrectly matched pair with reference to the organisms and their probable time of evolution

Options

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

Answer

To solve the question of selecting the incorrectly matched pair with reference to the organisms and their probable time of evolution, we will analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Options**: We need to evaluate the pairs given in the options. Each pair consists of an organism and a time period of evolution.

2. **Evaluate Jawless Fish**:
- Jawless fish are among the earliest vertebrates.
- They are believed to have evolved around 350 million years ago.
- This statement is correct.

3. **Evaluate Lobe-Finned Fish**:
- Lobe-finned fish are known to have evolved from jawless fish.
- They are also believed to have evolved around 350 million years ago.
- This statement is correct.

4. **Evaluate Fish-like Giant Reptiles**:
- Fish-like giant reptiles, known as ichthyosaurs, evolved from amphibians.
- They are believed to have evolved around 200 million years ago, not 350 million years ago.
- This statement is incorrect.

5. **Evaluate Seaweed**:
- Seaweeds are believed to have evolved around 320 million years ago.
- This statement is correct.

6. **Conclusion**:
- The incorrectly matched pair is the one that states fish-like giant reptiles evolved around 350 million years ago. The correct time frame for their evolution is around 200 million years ago.

### Final Answer:
The incorrectly matched pair is **Fish-like giant reptiles around 350 million years ago**.

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