Question

A sponge is a colony of cells that show a slight degree of specialization within the colony with some of the cells developing flagella to assist with filtering food out of the water for the rest of the colony. How does this justify placing them in the animal kingdom rather than with the other colonial protists?

Colonial protists generally lack specialized cells, so sponges fit slightly better with the animals.

All of the cells in a sponge have nuclei, which makes them more like animals than like protists.

Filter feeding is a common practice among marine invertebrates, so sponges

Answer 1

belong with animals.

All the colonial protists are plantlike algaes, so having flagellated cells puts sponges with animals.

Answer 2

option A

Answer 3

thanks!