Epidermal - Function: Protect the leaf, gas exchange Adaptations: Stomata for gas exchange, cells produce wax to prevent drying out , Palisade mesophyll - Function: Photosynthesis.                       Adaptation: cells elongated, near surface, contain chloroplasts, Spongy mesophyll - Function: Gas exchange.   Adaptations: Lots of air spaces, Xylem - Transports water and minerals.   Adaptation: Dead hollow cells that make long tubes, Phloem - Function: Transports dissolved sugars.    Adaptations: Start in leaves where sugar is made,

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