Nutrients In Plants Flashcards
How do gases move in and out of the plant?
Through stomata in the leaves and and lenticels in the stems (green structures)
What are CAM plants?
Plants that close their stomata and lenticels during the day limiting transpiration
What do CAM plants do with CO2?
Hold onto it during the night and use it during the day
How do CAM plants store CO2?
It reacts with a C4 molecule
What gases do plants require?
Carbon dioxide and oxygen
How is water absorbed?
Through osmosis.
What is cation exchange?
Root hairs pump H+ ions into the soil which bind to a compound in the soil releasing a different cation which the plant takes in through active transport.
How do other nutrients get into the roots?
By active transport
Why does water move into the plant?
All of the nutrients being taken in through active transport create a concentration gradient
What two ways can water travel through roots?
Symplastic route and
Apoplastic route
What is the symplastic route?
Water can move through cells to get to its destination
What is the apoplastic route?
Water travels around the cells to get to its destination
What do the letters in the TACT model stand for?
Transpiration
Adhesion
Cohesion
Tension
What is the TACT model?
How water moves up a plant
Explain transpiration in the TACT model
Water vapour leaves through the leaves
