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Kingdom Animalia — Bio Zoology STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11Bio ZoologyKingdom Animalia3 Marks
Question
What are the characteristic features of the phylum Ctenophora?
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Answer

  1. They are exclusively marine.
  2. They are radially symmetrical and diploblastic animals.
  3. In mesogica arnoebocytes and smooth muscles are present.
  4. Bioluminescence is well marked in ctenophores.
  5. They have collohiasts which help in food capture.
  6. They reproduce only by sexual means.

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