Multiple choice

All chordates at one or the other stage have :

  1. pharyngeal gill-slits

  2. vertebral column

  3. two pairs of pentadactyle limb

  4. a movable jaw
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A Correct answer
Explanation

General characters of chordates are: (1)        Presence of pharyngeal gill slits at any stage of life. (2)        Presence of notochord at any stage of life.  (3)        Presence of dorsal tubular nerve cord.

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