Question

How do poriferans obtain food and
oxygen? How do they get rid of the body
waste? Explain with respect to the canal
system they possess.​

Answer 1

Explanation:

Sponges do not have a nervous, digestive or circulatory system. They rely on keeping up a constant water flow through their bodies to obtain food and oxygen and to remove wastes. ... Cells in the sponge walls filter food from the water as the water is pumped through the body and the osculum ("little mouth").

Answer 2

Answer:

Sponges do not have a nervous, digestive or circulatory system. They rely on keeping up a constant water flow through their bodies to obtain food and oxygen and to remove wastes. ... Cells in the sponge walls filter food from the water as the water is pumped through the body and the osculum ("little mouth").