Which of the following is not present in chordates?

Dorsal nerve cord

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Pseudocoelom

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Notochord

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Pharyngeal gill slits

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Solution

The correct option is C Pseudocoelom
All chordates have a dorsal hollow nerve cord. It is present dorsally to the notochord. They have pharyngeal gill slits. Chordates have a true body cavity i.e. coelom. Therefore, chordates are known as coelomates.
So, the correct answer is option B.

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