Plant Transport Systems Flashcards
What do plants need transport systems for
Transport water, minerals and glucose
Cuticle
Waterproof layer that reduces water loss from leaf
Upper epidermis cells
Protects leaf and allows light to pass through to the layer below
Palisade mesophyll cells
Absorbs light for photosynthesis
Spongy mesophyll cells
Absorbs light for photosynthesis
Vein
Xylem: transports water from soil to leaf for photosynthesis
Phloem: transports sugar from photosynthesising cells to rest of the plant
Air spaces
Allows the diffusion of gases within the leaf
Stoma
Allows the carbon dioxide to enter the leaf and oxygen to exit the leaf
Guard cells
CONTROLS gas exchange between the leaf and the air outside the leaf
Transpiration
Water moves up the plant and is lost by evaporation from stomata in plant leaves
What is the rate of transpiration controlled by
Stomata