GENERAL HISTOLOGY

Detailed explanation-1: -What are two major cell types in a sponge’s tissue? Collar cells and amoebocytes. How do sponges feed? They draw water into central cavity by collar cells; as it passes through the sponge walls, amoebocytes pick up nutrients from the water.

Detailed explanation-2: -Choanocytes and archaeocytes The choanocytes are provided with a flagellum, which is surrounded by a collar composed of cytoplasm.

Detailed explanation-3: -Amoebocytes in sponges are motile, amoeba-like cells that transport nutrients between cells, transform into other cell types, and enable sexual reproduction. In other words, amoebocytes function to help sponges eat, grow, and reproduce.

Detailed explanation-4: -Choanocytes are specialized cells with a single flagellum surrounded by a microvilli net. Amoebocytes are sponge cells that can carry nutrients to other sponge cells. Choanocytes and amoebocytes are present in sponges.

Detailed explanation-5: -Although sponges do not have organized tissue, they depend on specialized cells, such as choanocytes, porocytes, amoebocytes, and pinacocytes, for specialized functions within their bodies.