In plants adapted to dry environments, the epidermis may have a thicker layer of cells to provide additional protection against water loss, while in plants in more moderate conditions, the epidermis typically consists of a single layer of cells.
How does the structure of the epidermis differ in plants adapted to dry environments compared to those in more moderate conditions?
Share
In plants adapted to dry environments, the epidermis exhibits structural modifications to minimize water loss. The cuticle, a waxy layer covering the epidermis, is thicker, providing enhanced water retention. Stomata, which allow gas exchange, may be fewer and sunken into pits, reducing exposure. Additionally, some plants have specialized epidermal cells, such as trichomes or hairs, that help trap moisture and create a microenvironment. In contrast, plants in more moderate conditions may have thinner cuticles and more abundant stomata, optimizing gas exchange without excessive water loss. These structural adaptations in the epidermis reflect the plants’ strategies for coping with varying environmental water availability.