Water transportation

Question 1

Water pathway

Answer 1

water in soil-root hair-root cortex-xylem-upward mouvement- leave-transpiration

Question 2

what does the stomata

Answer 2

regulate water loss, O2 diffuse out, CO2 uptake

Question 3

what are the three forces that uptake water

Answer 3

root pressure (push)
Transpiration (pull)
Capilarry Action (adhesion + cohesion)

Question 4

What are the environmental factor that affect transpiration (3)

Answer 4

High temperature. increase transpiration
High humidity. lower transpiration
Wind. increase transpiration

Question 5

what is the reason the guard cell open

Answer 5

Turgor Pressure. Take up potassium ions followed by water

Question 6

Which hormone control actively the turgor pressure

Answer 6

abscisic acid ABA

if water stress, ABA sent to receptor, ion leave cells (low pressure) and the stomata close

Question 7

What is the role of root hair

Answer 7

Increase contact with soil particle

Question 8

What is the active absorption

Answer 8

Transcellular

Question 9

What are the passive absorption (2)

Answer 9

Apoplastic pathway through cell wall

Symplastic pathway through cytoplasm (use plasmodesmata)