In which of the following plants are autogamy and geitonogamy prevented?

Which of the following devices promote cross-pollination?
$(i)$ Non-synchronization of pollen release and stigma receptivity
$(ii)$ Anther and stigma are placed at different positions
$(iii)$ Monoecious plants
$(iv)$ Production of dioecious plants
$(v)$ Self-incompatibility
$(vi)$ Anther and stigma are placed close to each other
$(vii)$ Self-compatibility

$A$ dioecious flowering plant prevents both:

The dioecious condition prevents:

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

Which of the following techniques are included in outbreeding devices?