Question

many sponges may be bigger than fishes, yet they do not have respiratory organs because they​

Answer 1

Answer:

Sponge belongs to phylum Porifera. It has cellular level of organization and thus, there are no definite organs or organ systems. They have a porous body through which water flows. They breathe through oxygen diffusion, which allows oxygen to pass from the water into the body of the sponge. Hence, the correct answer is option C.

Answer 2

Sponge belongs to phylum Porifera. It has cellular level of organization and thus, there are no definite organs or organ systems. They have a porous body through which water flows. They breathe through oxygen diffusion, which allows oxygen to pass from the water into the body of the sponge.