A plant with both male and female flowers borne over it is
Monoecious
Dioecious
Unisexual
Bisexual
Flowers preventing self-pollination is called
Continued self-pollination results in
Both, autogamy and geitonogamy are prevented in
Unisexuality of flowers prevents
$A$ : Continued self-pollination checks inbreeding depression.
$R$ : Pollen release and stigma receptivity are synchronised.