Transport of Water and Minerals (Leaving Cert Biology): Flashcards
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15 cards from this deck
Mineral needed for chlorophyll formation
Mineral needed for chlorophyll formation
Magnesium (Mg)
Mineral needed for middle lamella formation
Mineral needed for middle lamella formation
Calcium (Ca)
Active transport definition
Active transport definition
Movement from low to high concentration against gradient (requires energy)
3 adaptations of root hairs for water absorption
3 adaptations of root hairs for water absorption
Large surface area, thin walls, no cuticle
2 mechanisms for water movement up xylem
2 mechanisms for water movement up xylem
Root pressure & cohesion-tension model
Cohesion-tension model proposers & year
Cohesion-tension model proposers & year
Henry Dixon & John Joly, 1894
Cohesion definition
Cohesion definition
Force of attraction between similar molecules (due to hydrogen bonding)
Adhesion definition
Adhesion definition
Force of attraction between different molecules
Transpiration definition
Transpiration definition
Loss of water vapour from aerial parts of plant
Most important factor moving water in tall plants
Most important factor moving water in tall plants
Transpiration
Location of stomata on leaves
Location of stomata on leaves
Undersurface
Number of guard cells per stoma
Number of guard cells per stoma
Two
Factor regulating stomatal activity
Factor regulating stomatal activity
levels
Effect of low on stomata
Effect of low on stomata
Stimulates stomata to open
Effect of high on stomata
Effect of high on stomata
Stimulates stomata to close