ektexine
/ɛkˈtɛksɪn/
noun
- The outer layer of the exine (outer wall) of a pollen grain or spore.
- The thickness of the ektexine can help protect the pollen from environmental damage.
- Scientists study the ektexine to identify different plant species.
- The ektexine of the pollen grain has a distinctive pattern under the microscope.