Question

Differentiate between chordates and non-chordates.

Answer 1

CHORDATES	NON-CHORDATES
1) Animal having a notocord or backbone in their body structure are called chordates.	1) Animals without a notochord are called non-chordates.
2) Central nervous system is hollow and dorsal.	2) It is solid and ventral.
3) Heart is ventrally placed.	3) If present, it is on the dorsal side.
4) Haemoglobin is present in the RBCs.	4) If present, it is dissolved in the plasma.
5) Post anal tail is present.	5) It is absent in them.
6) Pharyngeal gill slits is present at some stage of life.	6) It is absent in them.