Question

what does porifera (sponges) share with all other animals (i.e., what are the synapomorphies of animalia)? how does porifera (sponges) differ from other animal clades (i.e., what do sponges lack that all other animals have)?

Answer 1

They are multicellular, but lack true tissues

Step-by-step explanation:

They lack true tissues. Sponges are very primitive organisms that are made of cells, but their cells are not organized into true tissues. They have an irregular body shape, lacking any type of symmetry, and they are not segmented.