A marine cartilaginous fish that can produce electric current is
(a) Pristis
(b) Torpedo
(c) Trygon
(d) Scoliodon

Options

A. Pristis
B. Torpedo
C. Trygon
D. Scoliodon

Answer

To solve the question, "A marine cartilaginous fish that can produce electric current is," we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify which of the listed marine cartilaginous fishes has the ability to produce electric current.

2. **Identify the Options**:
- (a) Pristis
- (b) Torpedo
- (c) Trygon
- (d) Scoliodon

3. **Recall Information about Electric Fish**:
- Some fish species have specialized organs that allow them to produce electric currents. These are often referred to as electric fishes.

4. **Analyze Each Option**:
- **Pristis**: Commonly known as sawfish, they are not known for producing electric currents.
- **Torpedo**: This fish is known as the numb fish and possesses electric organs that enable it to generate electric currents for communication, defense, and navigation.
- **Trygon**: Also known as stingrays, they do not primarily produce electric currents.
- **Scoliodon**: Known as the dogfish shark, they do not have the capability to produce electric currents.

5. **Select the Correct Answer**: Based on the analysis, the only fish from the options that can produce electric current is **(b) Torpedo**.

### Final Answer:
The marine cartilaginous fish that can produce electric current is **(b) Torpedo**.

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