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What is prorefira

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What is prorefira
  • 2 answers

Yogita Ingle 7 years, 4 months ago

  • The organisms belonging to this group have holes.
  • The animals of this group are non- motile and are attached to some rigid support.
  • The organisms belonging to this group have pores throughout their body.
  • They have a canal system circulates the water throughout the body of these organisms to transport the food and oxygen.
  • These organisms are covered with a hard external layer or skeleton.
  • Examples of animals belonging to this group are Euplectelea, Sycon, Spongilla.

Vishu Jaat 7 years, 4 months ago

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