Transpiration

Is transpiration active or passive?

passive

where does the energy for transpiration come from?

the sun

how does optimum humidity affect transpiration?

(dry) decreased conc of water outside the leaf creates a steeper conc gradient

how does optimum temperature affect transpiration?

(increase) increases kinetic energy of the water molecules

how does optimum air movement affect transpiration?

(windy) removes water molecules as they diffuse out of leaves to maintain a steep conc gradient

by which process is water moved into the roots of a plant?

osmosis

by which process are mineral ions moved into the roots of a plant?

active transport

describe how water is taken into the roots

mineral ions enter by active transport, lowering the water potential so water enters by osmosis

how do some plants in mineral deficient soils improve their water uptake in roots?

by having a mutualistic relationship with a fungus

how does water move from the root to the xylem?

through the symplastic pathway or the apoplastic pathway