Phylum Cnidaria

Question 1

What are Cnidarians?

Answer 1

“Cnida bearers” - This includes sea anemones, jellyfish, and corals

Question 2

Describe the lifecycle of Cnidarians

Answer 2

Larva to Polyp to the Medusa

Question 3

What stage of the Cnidarian lifecycle is benthic and sessile?

Answer 3

The Polyp form.

Question 4

Pelagic (floats in the upper layer of the water) and plank-tonic (weak swimmers) best describes which form of Cnidarians?

Answer 4

Larva form.

Question 5

Describe what the Medusa form looks like

Answer 5

The Medusa form is not free-swimming and not sessile. It is pelagic and plank-tonic like the larva stage.

Question 6

Does the Medusa indicate male or female qualities?

Answer 6

Trick question! The Medusa stage is neither male nor female.

Question 7

Every Cnidarian goes through a process called..?

Answer 7

Alternation of Generations.

Question 8

Symmetry in Cnidarians

Answer 8

Radial symmetry

Question 9

What Level of Organization do Cnidarians sit at?

Answer 9

Tissue level