Give the main functions of the following in cockroach :
a. Compound eye
b. Gizzard
c. Malpighian tubules

Explanation

To answer the question regarding the main functions of the compound eye, gizzard, and Malpighian tubules in a cockroach, we can break it down step by step:

### Step 1: Compound Eye
- **Function**: The compound eyes of a cockroach are made up of numerous small units called ommatidia. Each ommatidium acts as a separate visual receptor, allowing the cockroach to have a wide field of vision. This structure provides what is known as mosaic vision, enabling the cockroach to detect movement and perceive its environment effectively.

### Step 2: Gizzard
- **Function**: The gizzard is a muscular organ in the cockroach's digestive system. It acts as a grinding chamber where food is crushed and processed. The gizzard contains chitinous teeth and bristles that help in mechanically breaking down the food into smaller particles, facilitating digestion.

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