Question

…………… have many small pores all over their body.

Answer 1

Step 1:
Porifera:

1. The phylum Porifera (porous-holes, fera- bearing) consists of multicellular animals that bear pores.
2. These pores are known as ostia through which water enters. It helps with food collection, exchange of gases, and excretion.
3. The animals in this phylum are mostly aquatic.
4. The body comprises a cellular level of organization and it is asymmetrical.
5. They are the simplest animals and are non-motile that remain attached to the substratum.
6. Porifera reproduce both sexually and asexually.
7. Example: sponges, scypha, etc.

Final Answer: Porifera has many small pores all over their body.