The exoskeleton in cockroach is

Options

A. In the form of hardened chitinous plates
B. A single layer which covers the whole boby
C. Absent
D. Soft

Answer

### Step-by-Step Solution:

1. **Identify the Subject**: The question is about the exoskeleton of a cockroach, which is an insect.

2. **Understand the Composition**: The exoskeleton of a cockroach is primarily made up of a substance called chitin. This is a common component in the exoskeletons of many arthropods.

3. **Describe the Structure**: The exoskeleton is not a single layer; it consists of four different layers. This multi-layered structure provides strength and protection.

4. **Color and Texture**: The exoskeleton is typically hard and brown in color, which is characteristic of cockroaches.

5. **Function of the Exoskeleton**: The primary function of the exoskeleton is to protect the body of the cockroach and provide structural support.

6. **Conclusion**: Based on the information, the correct answer to the question is that the exoskeleton in cockroaches is made of chitin and is hard.

### Final Answer:
The exoskeleton in cockroaches is made of chitin and is hard.

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