The Nervous System of an Enteropneust Hemichordate (Or Acorn Worm)consists

question 24

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.

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