Sponges and Cnidarians

Front

What phylum is mainly asymmetrical?

Back

Porifera (sponges)

Front

What is the description of the Cnidarian digestive tract?

Back

An incomplete digestive tract consisting of one opening.

Front

What is the polyp body form?

Back

It is sessile and the mouth and tentacles point upward.

Front

What type of symmetry do Cnidarians have?

Back

Radial symmetry.

Front

What do jellyfish have instead of a brain or central nervous system?

Back

Nerve Net.

Front

What are the main characteristics of sponges?

Back

They are asymmetrical, lack true tissues, and have porous bodies.

Front

How do sponges obtain food?

Back

Through filter feeding using choanocytes.

Front

What are cnidocytes?

Back

Specialized cells in Cnidarians that contain stinging structures.

Front

What is the main function of the tentacles in Cnidarians?

Back

To capture prey and defend against predators.

Front

What are the two main body forms of Cnidarians?

Back

Polyp and medusa.