Question

In dimorphic heterostyly, what characterizes a pin flower (long-styled morph)?

Options

• A long style with the stigma positioned high up and anthers positioned low on short filaments

• A short style with the stigma positioned low down and anthers positioned high on long filaments

• Both style and anthers positioned at the same height

• A style that matures before the anthers

Answer 1

In the pin flower morph of dimorphic heterostyly, the style is long and the stigma is positioned high up in the flower, while the anthers are attached to short filaments and positioned low. This contrasts with the thrum flower, ensuring that pollinators deposit pollen at different body positions for effective cross-pollination.