, ▁the ▁governor - general ▁was ▁bound ▁to ▁act ▁in ▁accord ance ▁with ▁the ▁" law , ▁practice ▁and ▁constitution al ▁usage " ▁relevant ▁to ▁the ▁Governor ▁General ▁of ▁Canada . ▁His ▁formal ▁duties ▁included ▁the ▁following : ▁▁ ▁Executive ▁authority : ▁The ▁executive ▁authority ▁of ▁the ▁state ▁was ▁formally ▁' v ested ' ▁in ▁the ▁king , ▁but ▁exerc ised ▁by ▁the ▁governor - general ▁on ▁the ▁advice ▁of ▁the ▁Executive ▁Council . ▁ ▁App oint ment ▁of ▁the ▁Cab inet : ▁The ▁President ▁of ▁the ▁Executive ▁Council ▁( prime ▁minister ) ▁was ▁appointed ▁by ▁the ▁governor - general ▁after ▁being ▁selected ▁by ▁D á il ▁É ire ann ▁( the ▁lower ▁house ▁of ▁parliament ). ▁The ▁remaining ▁minister s ▁were ▁appointed ▁on ▁the ▁nom ination ▁of ▁the ▁president , ▁subject ▁to ▁a ▁vote ▁of ▁consent ▁in ▁the ▁D á il . ▁ ▁Convention ▁and ▁dissol ution ▁of ▁the ▁legisl ature : ▁The ▁governor - general , ▁on ▁beh alf ▁of ▁the ▁king , ▁conven ed ▁and ▁dissol ved ▁the ▁ ▁on ▁the ▁advice ▁of ▁the ▁Executive ▁Council . ▁ ▁Sign ing ▁b ills ▁into ▁law : ▁The ▁king ▁was ▁formally , ▁along ▁with ▁the ▁D á il ▁and ▁the ▁Se an ad , ▁one ▁of ▁three ▁components ▁of ▁the ▁O ire acht as . ▁No ▁bill ▁could ▁become ▁law ▁until ▁it ▁received ▁Royal ▁Ass ent , ▁given ▁by ▁the ▁governor - general ▁on ▁beh alf ▁of ▁the ▁king . ▁The ▁governor - general ▁theoret ically ▁had ▁the ▁right ▁to ▁v eto