phylum cnidaria

Question 1

what animals does this phylum contain?

Answer 1

hydras, corals, jellies

Question 2

which organism are sessile and which are motile?

Answer 2

corals are sessile and jellies are motile

Question 3

what kind of body type and body germ layers do these animals contain?

Answer 3

radial symmetry and diploblastic

Question 4

where does food, waste, and reproductive structures exit/enter?

Answer 4

mouth

Question 5

how do they support themselves?

Answer 5

derive most support from buoyancy of water along with hydrostatic skeleton that aids in support/movement

Question 6

what are cnidocytes and nematocysts?

Answer 6

1) cells used for defense and capture prey
2) nematocysts contain stinging thread that penetrates body wall

Question 7

what is significant about their nervous systems?

Answer 7

most primitive in animal kingdom, called a nerve net

Question 8

how is waste exchanged?

Answer 8

simple diffusion

Question 9

what are the two clades?

Answer 9

medusozoans: produce a medusa and go through alternation of generations
anthozoans: polyp formed only, sea anemones and corals