Question

Difference between Chordates and non - Chordates ? ​

Answer 1

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CHORDATES :-

• Notochord present .
• Central nervous system is dorsal , hollow and single.
• Heart is ventral.
• A post - anal tail is present .
• Pharynx perforated by gill slits .

NON - CHORDATES :-

• Notochord absent .
• Central nervous system is ventral, solid and double.
• Heart is dorsal (if present) .
• Post - anal tail is absent .
• Gill slits are absent .

Answer 2

Answer:

CHORDATES NON-CHORDATES1) 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.