Question

Write two salient features of chordates.

Answer 1

The characters which are present either in the embryonic or adult stage od chordates are

1) Notochord: There is a notochord which is present in the embryonic stage. It is made up of cartilage.

2) Dorsal hollow nerve cord: There is a bundle of nervous fibres which are present in the dorsal region and run down the body.

3) Pharyngeal gill slits: These are series of openings which are used as gills.

4) Tail: They have a post-anal tail near the anal opening.