In animal, 'X' the exoskeleton is made up of different units joined together that permits movement. Identify the animal 'X'.

Options

A. Snail
B. Fish
C. Snake
D. Cockroach.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks to identify an animal ('X') that has an exoskeleton made up of different units that allow for movement.

2. **Defining Exoskeleton**: An exoskeleton is a hard outer structure that provides support and protection to an animal's body. It is different from an endoskeleton, which is found inside the body.

3. **Identifying Characteristics**: The question specifies that the exoskeleton is made of different units joined together. This suggests that the exoskeleton is segmented or composed of multiple parts.

4. **Considering Possible Animals**:
- Snails have an exoskeleton made of calcium carbonate, which is not segmented.
- Fish have an endoskeleton made of bones or cartilage.
- Snakes also have an endoskeleton and do not have an exoskeleton.
- Cockroaches, on the other hand, have an exoskeleton made of chitin, which is composed of different units that are jointed together.

5. **Conclusion**: Based on the characteristics of the exoskeleton and the options considered, the animal 'X' is identified as a cockroach.

**Final Answer**: The animal 'X' is a cockroach.

---