The body cavity of arthropods is

Options

A. Pseudocoel
B. Coelom
C. Haemocoel
D. Acoelom

Answer

**Step-by-Step Solution:**

1. **Understanding Body Cavities**: In biology, body cavities are spaces within an organism that are filled with fluid and house internal organs. They can be classified into different types based on their structure and function.

2. **Types of Body Cavities**: The main types of body cavities are:
- **Coelom**: A true body cavity that is completely lined by mesoderm.
- **Pseudocoelom**: A body cavity that is not completely lined by mesoderm.
- **Haemocoel**: A body cavity that is filled with blood or blood-like fluid, typically found in organisms with an open circulatory system.

3. **Body Cavity in Arthropods**: Arthropods, which include insects, arachnids, and crustaceans, possess a unique type of body cavity. Their body cavity is primarily referred to as the **haemocoel**.

4. **Function of Haemocoel**: The haemocoel serves multiple functions:
- It accommodates the internal organs of the arthropod.
- It is filled with **haemolymph**, which is the equivalent of blood in arthropods. Haemolymph circulates through the haemocoel, delivering nutrients and removing waste products.

5. **Conclusion**: Therefore, the correct answer to the question "The body cavity of arthropods is" is **Haemocoel**.

**Final Answer**: The body cavity of arthropods is **Haemocoel**.

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