The outbreeding device where anthers and stigmas mature at different times is called as -------------.

Dichogamy is an outbreeding device in which the anthers and stigmas of a bisexual flower mature at different times to prevent self-pollination.

It is of two types: protandry, where anthers mature earlier than the stigma, and protogyny, where the stigma matures earlier than the anthers.

Unisexuality refers to the presence of only one type of reproductive organ in a flower.

Herkogamy refers to the presence of a physical barrier between the anther and stigma.

Heteromorphy refers to the presence of different forms of flowers, such as varying lengths of styles and stamens.

Answer: Dichogamy