Flowers are unisexual in

Does self incompatibility impose any restrictions on autogamy ? Give reasons and suggest the method of pollination in such plants.

Mention two strategies evolved to prevent self-pollination in flowers.

Flower in which only one set of essential organ is present are said to be

$A$ : Continued self-pollination checks inbreeding depression.
$R$ : Pollen release and stigma receptivity are synchronised.

A dioecious flowering plant prevents both