Question

What are the 3 main classes of Poriferans (Sponges)?

Answer 1

Hexactinellida, the Demospongia, and the Calcarea.

Step-by-step explanation:

mr cleann

Answer 2

The approximately 5,000 living sponge species are classified in the phylum Porifera, which is composed of three distinct groups, the Hexactinellida (glass sponges), the Demospongia, and the Calcarea (calcareous sponges).

hope this helps