Question
Distinguish between Nonchordata and Chordata.
✓
Answer
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Nonchordates
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Chordates
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i.
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Notochord is absent in them.
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Notochord is present in them at some of their developmental stage.
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ii.
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Their central nervous system is solid and ventral.
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Their central nervous system is hollow and dorsal.
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iii.
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Their circulatory system is of open or closed type.
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Their circulatory system is of closed type.
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iv.
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Heart, if present in them, is dorsal in position.
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Heart is always present and is ventral in position.
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