What is the name of cells those line the spongocoel?

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the name of the cells that line the spongocoel, which is a specific structure in sponges.

2. **Defining Spongocoel**: The spongocoel is the central cavity found in sponges. It is part of their body structure and plays a crucial role in their feeding and water circulation.

3. **Identifying the Organism**: Sponges belong to the phylum Porifera. This is important to know as it helps in understanding the biological context of the question.

4. **Identifying the Cells**: The cells that line the spongocoel are known as choanocytes. These are specialized cells that have a unique structure.

5. **Function of Choanocytes**: Choanocytes are flagellated cells, meaning they have a whip-like structure called a flagellum. The movement of the flagella helps in creating a water current through the spongocoel, which is essential for the sponge's feeding mechanism.

6. **Final Answer**: Therefore, the name of the cells that line the spongocoel is **choanocytes**.