ZoologyIf ‘1’ represents extracellular digestion, ‘2’ represents intracellular digestion and ‘3’ represents both types, then select the correct option for Cnidaria, Ctenophora and Porifera.

If ‘1’ represents extracellular digestion, ‘2’ represents intracellular digestion and ‘3’ represents both types, then select the correct option for Cnidaria, Ctenophora and Porifera.

  1. A

    1, 2 and 3 respectively

  2. B

    3, 3 and 2 respectively

  3. C

    3, 2 and 1 respectively  

  4. D

    3, 2 and 2 respectively

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    Solution:

    Digestion is exclusively intracellular in Porifera. Digestion is both extracellular and intracellular in Cnidaria and Ctenophora.

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