Cross-section of a leaf diagram with detailed annotations and functions of each layer.

Hand-drawn diagram of a cross-section of a leaf with labeled parts including cuticle, epidermis, guard cells, palisade mesophyll, phloem, xylem, and bundle sheath, accompanied by handwritten notes explaining each component's function.

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1. Cuticle - Prevents water loss
2. Epidermis - Covers the upper and lower sides of the leaf, protects the internal tissues, translucent, allows light to reach mesophyll
3. Guard Cells - Modified epidermal cells that are photosynthetic and they open and close the stomata (pores in the leaf)
4. Palisade Mesophyll - Main function: photosynthesis, has the most chloroplasts
5. Phloem - Carries the products of photosynthesis via active transport, products: oxygen + glucose, phloem is food
6. Xylem - Carries H2O and nutrients from the roots to the rest of the plant
7. Spongy Mesophyll - Allows CO2 + oxygen to reach the palisade cells, also functions in photosynthesis
8. Bundle Sheath - Regulates the movement of substances, helps protect the vascular tissue (xylem + phloem)

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