The body cavity of arthropods is called:

Options

A. haemocoel
B. pseudocoel
C. coelom
D. exterior

Answer

**Step-by-Step Solution:**

1. **Understanding Body Cavities**: In biology, body cavities are spaces within an organism that house various organs and systems. Different groups of animals have different types of body cavities.

2. **Identifying the Body Cavity in Arthropods**: Arthropods are a diverse group of animals that include insects, arachnids, and crustaceans. The body cavity in arthropods is known as the "hemocoel."

3. **What is Hemocoel?**: The hemocoel is a type of body cavity that is filled with a fluid called hemolymph. This fluid plays crucial roles in the circulatory and respiratory systems of arthropods.

4. **Function of Hemolymph**: Hemolymph is responsible for transporting nutrients, waste products, and gases throughout the body of the arthropod. It also plays a role in the immune response.

5. **Conclusion**: Therefore, the body cavity of arthropods is called the hemocoel.

**Final Answer**: The body cavity of arthropods is called the hemocoel.

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