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Refer to the Figure Showing an Acorn Worm (Top) and Pterobranchs

Question 150

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Refer to the figure showing an acorn worm (top) and pterobranchs (bottom) . Refer to the figure showing an acorn worm (top) and pterobranchs (bottom) . Which statement regarding structure and function of body parts in the hemichordates shown is false? A) Pterobranchs live in a tube secreted by the proboscis. B) In acorn worms, cilia convey mucus and its attached prey to the mouth. C) In pterobranchs, tentacles from the collar capture small prey. D) Acorn worms possess a proboscis and trunk but no collar. E) Acorn worms breathe by pumping water into the mouth and out through the pharyngeal slits. Which statement regarding structure and function of body parts in the hemichordates shown is false?


A) Pterobranchs live in a tube secreted by the proboscis.
B) In acorn worms, cilia convey mucus and its attached prey to the mouth.
C) In pterobranchs, tentacles from the collar capture small prey.
D) Acorn worms possess a proboscis and trunk but no collar.
E) Acorn worms breathe by pumping water into the mouth and out through the pharyngeal slits.

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