exodermis
/ˌɛksoʊˈdɜrmɪs/
noun
- A protective outer layer of cells in the roots of some plants, just beneath the epidermis.
- The exodermis develops a waxy coating to block excess salt.
- The exodermis helps prevent water loss from the root.
- In many plants, the exodermis acts as a barrier against pathogens.