Question
Distinguish between Chordates and Non-Chordates.

Answer

Differences between chordates and non-chordates are given below:
S.No.
Chordates
Non-Chordates
1.
Notochord is present atleast in some stages of development.
Notochord is absent.
2.
Central nervous system is dorsal, hollow, single and non-ganglionated.
Central nervous system is ventral, solid, double and gangliolated
3.
Gill slits present on lateral side of pharynx in sum stages or throughout the life.
Gill slits are absent.
4.
Tail is present in some stages and throughout the life.
Tail is generally absent.
5.
Heart is ventral.
Heart is dorsal.
6.
Haemoglobin is present in RBCs.
It is present in plasma.

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