€¢ draw and label a generalized open circulatory system and a closed circulatory system

Circulatory  system is flow  of  materials  from  one  part  of  the  body  to  another  part  of  the  body.  They  are two  type  of  circulation,  that  is  open  circulation  system  and  closed  circulatory  system. in  open  circulatory blood  is  not   remain closed  in a  tube while  in  closed  blood  remain  enclosed  in  a  tube.  The  following  are  diagrams  of  circulatory  system.  

4, two dominant and two recessive