Definitions from the Web
Upper Epidermis
Description:
The upper epidermis is the outermost layer of cells on the upper surface of a plant's leaf or stem. It serves as a protective barrier against environmental factors such as water loss, pathogens, and excessive sunlight exposure.
Sample Sentences:
- The upper epidermis of a leaf contains a waxy cuticle that helps reduce water loss through transpiration.
- In certain plants, the upper epidermis is covered with tiny hairs that act as a defense mechanism against herbivores.
- Under a microscope, you can observe the upper epidermis consisting of tightly packed cells.
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