Porifera Quiz

What is the term for multicellular animals?

• Protozoans

• Eukaryotes

• Protists

• Metazoans

These are solitary or colonial protozoans with a flagellum surrounded by a collar of microvilli.

• Choanoflagellates

• Dinoflagellates

• Sporozoans

• Ciliates

Phylum Porifera are typically known as...

• sponges

• annelids

• jellyfish

• corals

Which is NOT true about Phylum Porifera?

• they are unicellular heterotrophs

• have are pore-bearers

• they lack tissues and organs

• they are mostly assymetrical

These are tiny holes that allow sponges to filter out food from the water.

• Ostia

• Oscula

• Choanocytes

• Spicules

What term describes the characteristic of sponges where they live permanently attached to a surface and do not move around on their own?

• Motile

• Sessile

• Free-living

• Pelagic

A skeleton of tiny needlelike structure that supports sponges.

• Choanocytes

• Spicules

• Mesohyl

• Ostia

What is the rigid skeleton in sponges primarily made of?

• Spicules

• Mesohyl

• Spongin

• Choanocyte

What is the fibrous skeleton in sponges primarily made of?

• Spongin

• Spicules

• Mesohyl

• Ostia

The simplest canal system wherein water enters through the ostia and exits through the large osculum

• Asconoid

• Syconoid

• Leuconoid