Question

Insects, in contrast to chordates, have what feature in their nervous system?

Answer 1

Answer:

Animals in the phylum Chordata share four key features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.

Answer 2

Insects have a very simple nervous system as compared to the chordates and the following are the features:

1) the three main ganglia in the body forms the brain of the insect, known as the supraesophageal ganglion.

2) another ganglion is the subesophageal ganglion which forms the body of the insect and has a connection of various ganglia throughout the body.

3) the ganglion chain other than the supraesophageal chain lies below the elementary canal.