Question

How do poriferan animals differ from coelenterate animals?

Answer 1

The differences between proiferan and coelentrate animals are as follows:

Porifera	Coelentrate
1. Cellular level of organisation is present.	1. Tissue level of organisation is present.
2. Intracellular digestion is present.	2. Intracellular as well as extracellular digestion is present.
3. Appendages are not present.	3. Appendages in the form of tentacles are present.
4. Muscles and nerve cells are not present.	4. Muscles as well as nerve cells are present in these organisms.
5. Large number of incurrent pores and a single excurrent pore is present in the bodies of these organisms.	5. The body of these organisms is composed of a single opening.