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Transport in Plant Vascular Tissues - Coggle Diagram
Transport in Plant Vascular Tissues
Xylem
Transport
Water
Solutes
Minerals
unidirectional
upwards
Position
Variable
Root
Stem
Shoot
Structure
Dead
Lignin Support in walls
Impermeable to water
Function
Transpiration
Evaporation of water from plant surface
Stem
Leaf
Factors increase the rate
increase temp.
increase stomata on underside of leaf
Day: Turgid
Night: Guard Cells; flaccid
increase light intensity
increase stomata on underside of leaf
increase wind
sunken stomata
decrease transpiration
root hairs absorb water
increase SA
osmosis moves water in xylem
root --> stem --> leaf in transpiration stream
cohesion forces between water molecules
hydrogen bonding
Phloem
Transports
amino acids
Sugars
glucose
sucrose
bidirectional
Structure
Perforations
Sieve tubes
Living Cells
Function
Translocation
no forces
active transport from source
sink
glucose --> sucrose
moves against concentration gradient
travel through sieve tube
energy from companion cells