Electric organs occur in

Options

A. Sharks
B. Goldfish
C. Porpoises
D. Rays

Answer

To determine where electric organs occur, we need to analyze the options provided:

1. **Understanding the Options**:
- **A. Shark**: Sharks belong to the class Chondrichthyes, which are cartilaginous fish. They do not possess electric organs.
- **B. Goldfish**: Goldfish are bony fish (Osteichthyes) and do not have electric organs.
- **C. Porpoises**: Porpoises are marine mammals and do not have electric organs.
- **D. Rays**: Rays are also cartilaginous fish (Chondrichthyes) and include species like the torpedo ray, which is known for its electric organs that can produce electric shocks.

2. **Identifying the Correct Answer**:
- Among the options, only the **rays** (D) are known to have electric organs. The torpedo ray is a specific example that has these organs and can generate electric shocks.

3. **Conclusion**:
- Therefore, the correct answer is **D. Rays**.