Class 11 Biology Animal Kingdom Phylum Ctenophore

Phylum  Ctenophore

  • Ctenophores, commonly known as sea walnuts or comb jellies.
  • The body bears eight external rows of ciliated comb plates, which help in locomotion.
  • They are exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organization.
  • Bioluminescence is the property of a living organism to emit light, is found in ctenophores.
  • Digestion is both extracellular and intracellular, sexes are not separate.
  • Reproduction takes place only by sexual means, fertilization is external with indirect development.

Examples- Pleurobrachia and Ctenoplana.


Fig. Ctenophore

Share these Notes with your friends  

< Prev Next >

You can check our 5-step learning process