A post -anal tail is found in

Options

A. Earthworm
B. Lower invertebrate
C. Scorpion
D. Snake

Answer

To solve the question "A post-anal tail is found in," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition**:
- A post-anal tail is a tail that extends beyond the anus of an animal. It is a characteristic feature of certain animal groups.

2. **Identify the Animal Groups**:
- The question provides four options: earthworm, lower invertebrate, scorpion, and snake. We need to determine which of these has a post-anal tail.

3. **Analyze Each Option**:
- **Earthworm**: Earthworms are annelids and do not have a post-anal tail.
- **Lower Invertebrate**: This term is broad and can refer to many animals, but generally, many lower invertebrates do not have a post-anal tail.
- **Scorpion**: Scorpions are arachnids and do not possess a post-anal tail.
- **Snake**: Snakes are reptiles and belong to the group called chordates, which are known to have a post-anal tail.

4. **Conclusion**:
- Among the given options, the only animal that has a post-anal tail is the snake.

### Final Answer:
- A post-anal tail is found in **snake**.

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