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Annelids, like the earthworm, and arthropods, like insects or spiders, have three main structures in their nervous systems: _____.
A. a brain, a dorsal nerve cord, and a ventral nerve cord.
B. a brain, segmented ganglia, and a ventral nerve cord.
C. segmented ganglia, a dorsal nerve cord, and a ventral nerve cord.

Respuesta :

brain,segmented ganglia and ventral nerve cord
meerkat18
The correct answer is B. a brain, segmented ganglia, and a ventral nerve cord. 

Annelids, like the earthworm, and arthropods, like insects or spiders, have three main structures in their nervous systems namely a primitive brain, ganglionic mass, connected by a ring of nerves to a ventral nerve cord. 

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