What is the blood of cockroach called as? What is its color and why?

Explanation

**Step-by-Step Solution:**

1. **Identify the Blood of Cockroach**: The blood of a cockroach is referred to as "hemolymph." This term is used because it serves a similar function to blood in other organisms, although it is not identical.

2. **Color of Hemolymph**: The hemolymph of cockroaches is colorless. This is an important characteristic that distinguishes it from the blood of many other animals, which often contains pigments that give it color.

3. **Reason for Colorlessness**: The reason hemolymph is colorless is that it does not contain hemoglobin, the protein responsible for transporting oxygen in the blood of vertebrates. In cockroaches, oxygen is transported through a different system involving tracheae, which deliver oxygen directly to the tissues.

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