The maturation of male (anthers) and female (stigma) reproductive structures at different times in the same flower (in order to reduce the possibility of self-pollination) is called:

$A$ dioecious flowering plant prevents both:

When the anthers mature earlier than the stigma of one's own flower,the condition is known as

The devices to discourage self-pollination are:

What is the outbreeding device,where the stamens and carpels mature at different times called?

Given below are two statements:
Statement $I$: In heteromorphic flowers,pollen grains produced from anther pollinate stigmas produced at same level.
Statement $II$: In Tobacco,the germination of pollen on the stigma of the same flower is inhibited.
In the light of above statements,select the correct option given below: