Invertebrate Unit exam

Which phylum are sponges classified?

• Cnidaria

• Animalia

• Porifera

• Protista

What does the term Porifera mean?

• pore-bearing

• sponge-bearing

• cell-bearing

• bud-bearing

Which of the following describes the shape of a sponge?

• Symmetrical

• Asymmetrical

• Fragmentation

• Sessile

What type of symmetry do cnidarians demonstrate?

• Bilateral symmetry

• Radial symmetry

What is the common name for all Platyhelminthes?

• roundworms

• flatworms

• segmented worms

• parasitic worms

What is cephalization? 

• Having male and female parts.
• A concentration of sense organs and nervous system at the anterior end of the body. 
• Feeding off of another organism.
• Breathing through the skin.

The Simplest of all animals is the 

• Sponge
• Rotifera
• Cnidaria
• Cockroach

A Rotifer belongs to the Phylum Cnidaria.

• True
• False

Members of the Phylum Cnidaria have stinging tentacles.

• True
• False

Rotifers belong to the Phylum “Rotisserie”.

• True
• False