Question
Write any four differences between chordates and non-chordates.
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Chordates
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Non-chordates
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1.
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They possess a notochord at some stage in life.
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They do not possess a notochord.
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2.
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Pharynx is perforated by gill slits.
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Gill slits are absent.
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3.
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Heart is ventral.
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Heart (if present) is dorsal.
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4.
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Single, hollow tubular nerve cord is dorsal.
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Nerve cord is solid tubular, single/ double and ventral.
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5.
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A post anal tail is present.
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A post-anal tail is absent.
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