<prompt> All are true regarding aoic arch derivatives except:Pulmonary aery develops from 6th archMaxillary aery derives from 1st archAll 6 arches are not present simultaneously5th arch is absent in 5 of embryos  <response>: D i.e. 5th arch is absent in 5 of embryos - All 6 aoic arches are not present simultaneously. In 50 of embryos 5deg arch is never formedQ.- There is formation of maxillary aery from 15t archQ; hyoid stapedial aeries from 2nd arch; common, internal external carotid from 3rd archQ; arch of aoa right subclan aery from left right 4th arch respectivelyQ; and pulmonary aery from 6deg aoic archyQ 