Frog has spinal nerves

Options

A. 33 pairs
B. 13 pairs
C. 9 paired and 1 unpaired
D. 10 paired and 1 unpaired

Answer

To solve the question regarding the number of spinal nerves in frogs, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks how many spinal nerves a frog has, with multiple options provided.

2. **Identify the Options**: The options given are:
- 33 pairs
- 13 pairs
- 9 pairs and 1 unpaired
- 10 pairs and 1 unpaired

3. **Recall Basic Anatomy**: Frogs, like other vertebrates, have a spinal cord from which spinal nerves emerge. These nerves are essential for transmitting signals between the body and the central nervous system.

4. **Research Spinal Nerve Count in Frogs**: It is known that frogs typically have nine pairs of spinal nerves. In some rare cases, there may be an additional unpaired nerve.

5. **Conclude the Answer**: Based on the information gathered, the correct answer is that frogs have **9 pairs of spinal nerves and 1 unpaired nerve**.

6. **Select the Correct Option**: Among the options provided, the correct choice is **9 paired and 1 unpaired**.

### Final Answer:
The correct answer is **9 pairs and 1 unpaired** spinal nerve.

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