What is the function of fat body?

Explanation

### Step-by-Step Solution:

1. **Introduction to Fat Body**:
- The fat body is a specialized tissue found in certain organisms, including cockroaches and frogs. It serves various functions depending on the organism.

2. **Fat Body in Cockroach**:
- In cockroaches, the fat body is located beneath the body wall and occupies spaces not filled by internal organs.
- The primary function of the fat body in cockroaches is related to excretion. It accumulates, produces, and stores uric acid and urate granules, which are important for waste management in the organism.
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