Ch 12B

Question 1

1) Give three examples of members that belong to the phylum Cnidaria?

Answer 1

Jellyfish, hydras, sea anemones

Question 2

2) What type of symmetry do jellyfish have?

Answer 2

Radial

Question 3

3) Where can the nematocysts of jellyfish be found?

Answer 3

Tentacles

Question 4

4) What is another name for the stingers of jellyfish?

Answer 4

nematocysts

Question 5

5) Where does the process of digestion take place?

Answer 5

gastrovascular cavity

Question 6

6) What is the name for an organism that CANNOT move from place to place?

Answer 6

Sessile

Question 7

7) What process takes place in the gastrovascular cavity?

Answer 7

Digestion

Question 8

What are filter feeders?

Answer 8

Organisms that gather food particles from flowing water though their bodies

Question 9

What organism belong to the phylum Porifera?

Answer 9

Filter feeders

Question 10

What is the difference between a sponge skeleton and a jellyfish’s skeleton?

Answer 10

Sponges have skeletons that are made up from hard substances like spongin and spicules while jellyfish have hydrostatic skeletons made from water

Question 11

What is the name for a skeleton based on water?

Answer 11

Hydrostatic skeleton

Question 12

Give two examples of the hard substances that make up a sponge skeleton?

Answer 12

Spongin and spicules

Question 13

What is the name for the adult body form of a jellyfish?

Answer 13

Medusa