how does the structure of a sponge relate to its method of nutrition?

Answer 1

It's porous structure allows nutrients in the water to flow through it.

Answer 2

Sponges belong to Phyla Porifera: "Pore-bearers". This means they have lots of holes in them. These holes, called "incurrent pores" allow the sponge to filter sea water which contains small microscopic animals and plants called plankton and also other debris that is broken down from the degeneration of dead sea organisms. This is the "food" for the sponge. When the sea water enters the incurrent pores, there are special cells called amoebocytes within the tissue of the sponge that "gobble up" the food like an amoeba would and these cells act as the digestive system of the sponge. Waste is then released into the sea water and expelled from the sponge through the excurrent pore or pores. This is how a sponge feeds.

Answer 3

Sponges have Spngocoel (a jelly like cavity) and Chanocytes (collar cells that help in feeding) . These 2 structures help them act as a filter feeder. (they take in food particles from water). They also have a flagella which help them pump up water and water moves in across the chanocytes and moved into cells and there are ameobocytes inside the sponge which distributes the nutrients in the water.