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AIIMS2002BotanyAnimal Kingdom

Ambulacral grooves are absent in the living forms of the Class

Options

  1. ACrinoidea
  2. BAsteroidea
  3. COphiuroidea
  4. DEchinodermata.

Correct answer

C. Ophiuroidea

Step-by-step solution

Ambulacral grooves are found in the arms of echinoderms lined by tube feet. Ambulacral grooves are absent in Ophiuroidea which are covered by ossicles.

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