What’s the common name of this organism?

Sponge

What is the phylum?

Porifera

Sponges are at the ______ level of organization

Sponges are at the cellular level of

organization

What is the name for excurrent pores?

Osculum

What is the function of choanocytes?

Choanocytes form much of the sponge body and function in filter feeding and intracellular digestion. Choanocytes help distinguish phylum porifera.

What type of symmetry do sponges have?

Sponges are either asymmetrical or radially

symmetrical.

Incurrent openings or pores are

termed_______.

Incurrent openings or pores are termed ostia.

Sponges have an exoskeleton formed of

what?

1. Spongin--spongy fibers of a protein material

2. Spicules – rigid crystalline structures made of calcium or silica

The central cavity of a sponge is called what?

Spongocoel