Chapter 33 -2

Question 1

What are the 3 types of sponges?

Answer 1

glass
chalk
commercial

Question 2

What are glass sponge?

Answer 2

silicon spicules & spongin for support

Question 3

What are chalk sponge?

Answer 3

calcium carbonate spicules & spongin

Question 4

What are commercial sponge?

Answer 4

no spicules - spongin only

Question 5

What are sponge spicules?

Answer 5

structural support for sponge

Question 6

Jellyfish, corals, hydrozoans are in which phylum?

Answer 6

cnidaria

Question 7

What does the body structure of cnidaria consist of?

Answer 7

tentacles
stinging cells (nematocysts)
2 layers of tissues (epidermis & gastrodermis)
mesoglea (separates above)
nerve net (no ganglia)

Question 8

Cnidaria consists of what 2 bodies?

Answer 8

medusa - free swimming

polyp - sessile/attached

Question 9

Jellyfish is an example of what kind body?

Answer 9

medusa

Question 10

Corals are an example of what kind of body?

Answer 10

polyp