The correct option is B Both pollen and ovules mature simultaneously
Autogamy
Autogamy is a type of pollination that occurs when pollen grains are transferred from the anther to the stigma of the same flower in a plant.
Chasmogamous flower
Chasmogamous flower is a type of flower that opens and exposes the male and female reproductive organs of the plant.
Autogamy in chasmogamous flower
Autogamy in a chasmogamous flower requires the following conditions:-
* Anthers and stigma should be in close proximity to each other.
* Simultaneous release of pollen grains and reception by stigma. In other words both androecium and gynoecium should mature at the same time.
Final answer
c. Both pollen and ovules mature simultaneously