zygomorphy
/ˌzaɪɡəˈmɔrfi/
noun
- The property of having bilateral symmetry, especially in flowers (being divisible into mirror-image halves along only one plane).
- The biologist studied the evolution of zygomorphy in different plant families.
- Zygomorphy is common in flowers that rely on insect pollination.
- Gardeners often notice zygomorphy in pea flowers and orchids.