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Animal Kingdom

Question
CBSEENBI11025866
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Tube within tube plan is exhibited by which of the following groups of animals?

  • Arthropods

  • Cephalochordates

  • Annelids

  • Mollusca

Solution

C.

Annelids

Annelids have straight alimentary canal representing a tube within a tube plan. In deuterostomatic animals anus develops earlier during embryonic development from
blastopore (e.g., all chordates and echinoderm invertebrates).

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