Which of the following animals is likely to have the most complex nervous system? Why? A....

Which of the following animals is likely to have the most complex nervous system? Why?

A. worm

B. jellyfish

C. grasshopper

D. sponge

Expert Solution

Nervous system organization is usually correlated to the lifestyle of the respective organism.

Worms ( flatworms, round-worms, and segmented-worms, belonging to the phylums platyhelminthes, aschelminthes, and annelida) have relatively simple nervous systems.
The phylum cnidaria, consisting of jellyfish possesses nervous system consisting of primitive nerve cells and their processes forming plexus.
In the phylum porifera consisting of sponges, nervous system is absent.
In the phylum arthropoda consisting of grasshopper, the nervous system consists of a nerve ring and double ganglionated ventral nerve cord. In grasshopper, the brain too is divided into specialised areas, having three main regions.

Hence, the option (C) is correct i.e, amongst the given organisms, grasshopper is likely to possess a complex nervous system.

gladiator answered 2 years ago

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