how do sponges move water through their bodies

Instead of a mouths they have tiny pores (ostia) in their outer walls through which water is drawn. Sponges have a unique feeding system among animals. They do this by swishing their flagella which pulls water through the incurrent pore – water then travels out the osculum at the top of the sponge. The inner layer consists of collar cells (A) whose function is to circulate water through the sponge. What helps circulate water through a sponge? What roles do Amoebocytes play in sponges?Īmoebocytes have a variety of functions: delivering nutrients from choanocytes to other cells within the sponge, giving rise to eggs for sexual reproduction (which remain in the mesohyl), delivering phagocytized sperm from choanocytes to eggs, and differentiating into more-specific cell types. Water is drawn into the sponge through tiny holes called incurrent pores. In order obtain food, sponges pass water through their bodies in a process known as filter-feeding. Carbon dioxide and other wastes, such as ammonia, diffuse into the water and are carried away.īecause they are attached, they are called sessile. Oxygen dissolved in the water diffuses into the surrounding cells. Sponges rely on movement of water through their bodies to carry out body functions.

What role does the movement of water play in the essential functions of a sponge? The structure of a choanocyte is critical to its function, which is to generate a directed water current through the sponge and to trap and ingest microscopic food particles by phagocytosis. The feeding chambers inside the sponge are lined by choanocytes (“collar cells”). Why is movement of water through a sponge important for feeding How are Choanocytes involved in this process? 11 Is the majority of Sponges filter feeders or carnivorous?.10 How are sponge cells adapted to their function?.9 How does a sponge draw water into its body?.6 How does water move through a sponge?.4 What helps circulate water through a sponge?.3 What roles do Amoebocytes play in sponges?.2 What role does the movement of water play in the essential functions of a sponge?.1 Why is movement of water through a sponge important for feeding How are Choanocytes involved in this process?.

How do sponges move water through their bodies