Transport Systems - Plants Flashcards
Xylem
The tissue that transports water in plants
Lignin
The substance that strengthens in the xylem
Phloem
The tissue that transports sugars in plants
Companion cell
Cells associated with the phloem
Sieve Plate
A structure found in the phloem
Upper epidermis
The top layer of tissue in a leaf
Palisade Mesophyll
The layer of cells in a lead where most photosynthesis takes place
Spongy Mesophyll
A layer of cells in a leaf with spaces for gases to diffuse in and out of the plant
Lower Epidermis
The bottom layer of a leaf
Stomata
The structures of the underside of a leaf that allows water to evaporate out of the plant.
Guard Cells
The cells that control the opening and closing of the stomata
Leaf Vein
The structure that contains the Xylem & Phloem
Transpirtation
The process of water moving through a plant and its evaporation through the stomata
Evaporation
When water becomes water vapour
Humidity
The concentration of water in the air
