The water flows through the body of a sponge in the direction that arrows point in this illustration. how does water move through the sponge?

Answer is: in through the pores and out through the osculum.

Water enters the spongocoel (central cavity of sponges) through tiny pores and exits through the osculum (excretory structure).

The spongocoel is filled with choanocytes (collar cells), which have flagella that push water through the spongocoel, creating a current.

Sponges pump large volumes of water, approximately a volume of water equal to the sponge's body size is pumped every five seconds.

Sponges are the members of the phylum Porifera.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

the answer is d.) potassium