leaf quiz

Leaf Structure and Function

• Leaves have an outer layer called the epidermis, often transparent and covered in a waxy cuticle. This cuticle helps prevent water loss.
• Stomata are tiny openings on the leaf surface, allowing gas exchange. Guard cells control the size of these openings.
• Guard cells regulate the size of the stomata's opening, thus controlling water loss. They open and close to manage water loss.
• Water vapor exits the leaf through the stomata in a process called transpiration.

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