phylum hemichordata

Question 1

hemichordates are commonly called:

Answer 1

acorn worms, pterobranchs, enterpneusts

Question 2

hemichordates are sister group to:

Answer 2

echinoderms

Question 3

hemichordates have 2 characteristic traits of chordates:

Answer 3

pharyngeal slits and a nerve cord

Question 4

hemichordates move:

Answer 4

through peristaltic contractions of proboscis, inchworm style

Question 5

hemichordates respire:

Answer 5

using cilia to draw water into mouth and push out water thru pharyngeal slits

Question 5

2 feeding guilds of hemichordates:

Answer 5

suspension feeders: mucus on provoscis gets particles stuck and cilia move the particles to the mouth. are able to sort particles

non-selective deposit feeders: eat sediment, digest organics, poop out clean sediments

Question 6

pterobranchia are:

Answer 6

a type of hemichordate. have arms with tentacles

Question 7

tornaria

Answer 7

ciliated larva of hemichordates, resemble the asteroidea ciliated larva

Question 8

hemichordate bodies, generally speaking, are:

Answer 8

worm-like