When male and female flowers mature in different time leads to the cross pollination was

Answer: Option D

When male and female flowers mature at different times leads to cross-pollination Dichogamy.
Dichogamy is a temporal flowering system in which male and female reproductive organs mature at different times within a single flower or across multiple flowers.
It refers to the maturation of anthers and stigma of the same flowers at different times. Dichogamy promotes cross-pollination even in the hermaphrodite species.