Question

Similarities between Porifera and Protozoa

Answer 1

Nerve cell / the muscle cell is absent 
Digest food within the cell
Most protozoan's are hetertrohs and all poriferan are also heterotrophs
Lack the gastrula stage

Answer 2

Answer:

Though Porifera and protozoa are different Phyla they have few similarities in them.

Explanation:

Some of the similarities between Porifera and protozoa are:

Both the phyla lack nerve cells and muscle cells.

The lack gastrula stage in development of embryo.

Mode of nutrition is same in Porifera and protozoa. They both are heterotrophs.

The process of digestion in both phyla is intra cellular digestion that is digestion with in the cell.