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why ctenophora are known as sea walnuts and comb jellies?

Your friend is correct!

 

  • Ctenophora are known as sea walnuts and comb jellies.

 

  • They are named as Comb jellies, for their combs - the rows of cilia, lining their bodies that propel them through the ocean.
  • They are walnut shaped and hence known as sea walnut.

 

  • Ctenophora are so delicate that specimens are difficult to collect. They are so fragile that they cannot be collected by submersibles and are known only by photographs.

 

 

@ Rayar 1997: Good answer! Keep Posting!!

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This is because ctenophora is naturally having a jelly like nature. Also it contains cilia covering the body in rows like that of the comb, which helps them in movement.

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Hence together they are called COMB JELLIES.

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It is marine and is found in sea waters. It has an absent Respiratory system, Circulatory system and Absent BRAIN.

Hence it is just compared to a walnut of its size with no brain.

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So together they are called SEA WALNUTS

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