User:BIBEK DHAKAL(bibek dhakal)

ONCYHOPHORA

1.oncyhophora is also known as valvet worm. 2. they are bilaterally symmetrical and vermiform 3.body cavity is true coelom 4.most possesses a through straight gut with an anus 5.body possesses 14 to 43 pair of unjointed leg 6.nervous system includes a brain and a pair of ventral nerve chords 7.possesses serial like exceratory organ 8.possess a simple respiratory system in the form of trachea and spiracles 9.open circulatory system with a heart 10.reproduction normally sexual and gonochoristic 11. all are terrestrial