Multiple Choice
The nervous system of an enteropneust hemichordate (or acorn worm) consists of
A) a small brain and a dorsal ladder network of ganglia for each body segment.
B) a network or plexus that runs underneath the epithelial cells that fuse to become ventral and dorsal neurochords.
C) a small brain and a ventral ladder network of ganglia for each body segment.
D) no brain but an extensive network of ganglia transferring information from sensory organs to the digestive system.
E) no specialized nerves; the epitheliomuscular must respond to stimuli itself in a manner similar to the cnidarians.
Correct Answer:

Verified
Correct Answer:
Verified
Q8: Which is NOT a correct association of
Q19: The function of the papulae in the
Q20: Water enters the water vascular system of
Q23: The larva of an acorn worm is<br>A)
Q25: Hemichordates do not have a kidney,but they
Q54: Water for filter feeding in the hemichordates
Q61: "Bipinnaria" describes the<br>A)larval form of many echinoderms.<br>B)central
Q72: _ are pincer-like projections clustered on the
Q78: A feature of the earliest echinoderms apparently
Q81: Small projections between the ossicles of sea