Deuterostomes Flashcards
1
Q
What are deuterostomes?
A
Hemichordates - not a chordate
2
Q
Anterior
A
Part with that looks like a tear drop
3
Q
Posterior
A
Near the pharyngeal slits/bars
4
Q
Describe the diet and feeding behavior of amphioxus.
A
Filter feeders that eat plankton, bacteria, and other small organisms.
5
Q
How can you identify amphioxus from larval lamprey?
A
Amphioxus: a chordate, does not have pharyngeal slits, ocelli, atriopore for filter feeding.
Lamprey: a vertebrate, visible liver and kidney, eyespots, brains, don’t have dorsal hollow nerve tube bc notochord, spinal cord, and brain derive from it.
