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PLANT STRUCTURE AND FUNCTION (Photosynthesis (plants (use sunlight to…
PLANT STRUCTURE AND FUNCTION
Structure
Two organ systems
Shoot system
Transport
Support
Xylem
Transport water and inorganic nutrients
minerals
Uni-Directional
Made up of dead cells
water to leaves
Phloem
Transports organic nutrients
sucrose
Bi-Directional
Root System
Anchorage
Absorption of minerals + water
Large SA of root hairs
Absorption
Branching root system
Transpiration-Cohesion-Tension
Transpiration
moisture through plants from roots
small pores on underside of leaves
changes to vapor
releases into atmosphere
relies on water being lost
through stomate action
Cohesion
sticking of particles of same substance
water molecules held together by cohesion forces
hydrogen bonding
Tension
upwards pull because of loss of water in leaves
Water through plants
via capillary action
Living cells not involved in water movement
1889-1896 E.A Strasburger
Photosynthesis
plants
use sunlight to create nutrients
carbon dioxide
water
generates oxygen
carbon dioxide + water --> glucose + oxygen
leaves are green
cholorophyl
to absorb sunlight
SA:V Ratio
Carbon dioxide through stomata
Water through root hairs
transported to leaves through xylem
Sunlight provides energy
Oxygen released through stomata
Glucose transported to plant through phloem