Question

which kingdom is known to contain organisms that have cells with no cell walls?
animalia
protista
archaebacteria
eubacteria

Explanation:

Organisms in Kingdom Animalia are multicellular eukaryotes with cells that lack cell walls. Other kingdoms listed (Protista may have some with cell walls, Archaebacteria and Eubacteria have cell walls) do not fit this trait.

Answer:

Animalia