NEET Biology question

Which of the following characters is absent in all chordates?

(A)DiaphragmCorrect
(B)Coelom
(C)Pharyngeal gill clefts
(D)Dorsal nerve cord

Answer: (A)

Solution

A muscular diaphragm is present only in mammals and is absent in the vast majority of chordates, so it is not a universal chordate character, unlike a true coelom,

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Question ID VK-106750