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  • ‘Ctenophora’ are called so becauseOption: 1 They bear spicules  Option: 2</stro

‘Ctenophora’ are called so because

Option: 1

They bear spicules
 


Option: 2

They bear calcified skeleton
 


Option: 3

They bear comb plates
 


Option: 4

All of the above


Answers (1)

best_answer

 

 

Phylum Ctenophora, Locomotion and Bioluminescence in Ctenophora -

  • It is a small phylum with 90 known species. The animals of this phylum are commonly called comb-jellies or sea-walnuts. 
  • These are exclusively marine, radially symmetrical and diploblastic animals.
  • They bear eight external rows of ciliated comb plates, due to which they are named ctenophores; ktene - comb, phoros - bearing.
  • They show tissue level of body organization.

 

 

 

 

The ciliated comb plates are responsible for locomotion. The cilia beat in a coordinated fashion making the animal to propel in a particular direction.

Posted by

Devendra Khairwa

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