text: And excretory system they don't have separate excretory system ಯಾಕಂದ್ರೆ water vascular system tube feet excretory ಅನ್ನ ನೋಡ್ಕೊಳ್ತವೆ. Reproduction as I said right from arthropoda all the phyla will be showing dioecious type of reproduction.