Phylum Cnidaria

Question 1

What are Cnidaria?

Answer 1

Stinging cells.

Question 2

Are Cnidaria more or less complex than Porifera?

Answer 2

More complex.

Question 3

Why are Cnidaria more complex than Porifera? (Five reasons)

Answer 3

1) A gut
2) Simple nervous system
3) All radial symmetry
4) Have stinging cells
5) Can move

Question 4

What is the vase shaped/sessile stage of Cnidaria?

Answer 4

Polyp

Question 5

What is the bell shaped/free living stage of Cnidaria? (The adult stage)

Answer 5

Medusa

Question 6

How do Cnidaria feed?

Answer 6

Tentacles sting and pull prey into their mouth, waste exits through mouth

Question 7

What are five examples of Cnidaria?

Answer 7

1) Hydra
2) Jellyfish
3) Anemones
4) Portuguese Man o War
5) Coral

Question 8

What is coral used as?

Answer 8

Habitats for fish and other marine animals.

Question 9

What does coral make up?

Answer 9

Reefs.

Question 10

Where does coral live?

Answer 10

Deposited limestone.

Question 11

What is a lagoon?

Answer 11

The quiet water between the reef and shore with lots of wildlife.