Transport in Plants

• Epidermis covers the outer surfaces of the plant for protection.
• Palisade mesophyll is the main site of photosynthesis in the leaf.
• Spongy mesophyll contain air spaces between the cells to allow gases to diffuse through the leaf.
• Xylem vessels transport water and minerals through the plant, from roots to leaves.
• Phloem vessels transport dissolved food materials through the plant.
• The meristem tissue produces new cells for growth.
• At the leaves, water evaporates and diffuses out of the stomata (small proes).
• The loss of water from the leaves is called transpiration.
• The role of guard cells is to open and close the stomata.
• The movement of food through the phloem tissue is called translocation.