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?

Answer 1

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 belong with animals.

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

Answer 2

In fourth you see all protist are not plant like algae it can be animal too
-> This is true, but the suggested answer doesn't actually say anything like that. What you need to know to eliminate this suggested answer is that a) COLONIAL protists are not exclusively plant-like, and b) that both protists (especially colonial algae!) and sponges have flagellated cells. So do plenty of other animals: think about sperm cells.

Answer 3

Give me a few minutes so I can verify my answer.

Answer 4

ok I'm really not sure of this question so any explanation is very nice thank you

Answer 5

Is this chemistry or biology? I may have misplaced you but I'mm still a tad confused.

Answer 6

The answer is D

Answer 7

thanks!