Which of the following flowers show heterostyle

Options

A. Mirabills
B. Hibiscus
C. Primrose
D. Pisum

Answer

C

Explanation

The plants of some species in which flowers are dimorphic. Thus facilitate cross pollination. Some of them possess a long style but short stamens and are known as pin-eyed while other have short style known as pin-eyed while others have short style and long stamens. These are known as thrum-eyed. e.g., Primrose.