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NEET2006BotanyAnimal KingdomActual

Which of the following character is present essentialy in chordates ?

Options

  1. AVentral spinal chord
  2. BDorsal heart
  3. CPharyngeal gill slits
  4. DBlood flow in forward direction in ventral blood vessels

Correct answer

C. Pharyngeal gill slits

Step-by-step solution

Chordate animals, at some time in their life history, exhibit the following three diagnostic charcters : (1) Presence of notochord. (2) Presence of dorsal tubular nerve cord. (3) Presence of gill clefts during development. Beside these, some other characters are : (4) Ventral heart. (5) Hepatic portal system.

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