Colourless fluid that takes part in material transport in insect is _______

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a colorless fluid involved in material transport in insects.

2. **Identifying the Fluid**: Insects have a specific fluid that serves a similar purpose to blood in vertebrates. This fluid is responsible for transporting nutrients, waste, and other materials throughout the insect's body.

3. **Naming the Fluid**: The fluid that fulfills this role in insects is called "hemolymph."

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