incomplete gut

Question 1

incomplete gut

Answer 1

consists of a digestive cavity with only one opening

Question 2

mouth

Answer 2

only opening that serves as a mouth an anus

Question 3

gastrovascular cavity

Answer 3

functions in both the digestion and the distribution of nutrients throughout the body

Question 4

gastrodermis

Answer 4

lines the gastrovascular cavity

Question 5

examples of organisms with incomplete guts

Answer 5

cnidarians (jellyfish, hydra)
planaria

Question 6

cnidocytes

Answer 6

located around the mouth and tentacles, and posess a unique secretory organelle

Question 7

nematocyst

Answer 7

unique secretory organelle that contains a coiled thread

Question 8

trigger

Answer 8

prevent chemically and mechanically nematocyst from firing when tentacles bump into each other

Question 9

thread

Answer 9

expelled in a harpoon-like fashion and can be sticky to ensnare the prey or can be hollow tubes that pierce the prey

Question 10

pharynx

Answer 10

extends from a planaria inferior surface that can be used to suck juice and organic material from food sources