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MOLLUSES

THE  PHYLUM   MOLLUSCS (MOLLUSCS)  is    large  group  of   animals    include  Octopus,Snails,and  scallops.Octopus    and  their   relatives  including   squids  and  cattle  fish -  fern  the  class Cephalopoda  .Cephalopodas   typically    have  a   head   with   radula (a  file  kike  feeding  Organ)  and  beak ;  a  well  develop  nervous  system ;   sucker  bearing  ten tales ; a  muscular mantle  (part  of  the  body  wall )  that  can  expel     water   through  the    siphon  ,    enabling  movement  by  the   jet  propulsion  ;  and  a  small  shell   or  no  shell.
Snails  and  their  relatives   slugs, limpets,and  abalones make  up  class   Gastropod a  . Gastropod     typically  have  a   coiled   external   shell  ,  although   some ,  such  as  slugs    have   a  small  internal  shell  or  no  shell; a  flat   foot ;  and  a  head   with  tentacles  and  a   radula .Scallops   and   their  relatives  -  including  clams , mussels,  and  oysters    make  up  the   class  Bivalvia(also  called  Pelecypoda).Features  of  bivalves   include  a  shell   with  two  halves (valves );large    gills   that  are  used  for    breathing  and  filter   feeding ;  and   no   radula.

 MOLLUSES



 

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