chapter 2

Question 1

plants transmit to the atmosphere the majority of the water absorbed from soil (generally around 90%)

Answer 1

transpiration process

Question 2

occurs whenever two conditions are met:
(1) Stomata are open, and (2) the air surrounding leaves is drier than the air inside leaves

Answer 2

transpiration

Question 3

the potential energy that water has in a particular environment compared with the potential energy of pure water at room temperature and atmospheric pressure.

The water content in the soil, plants and atmosphere. (Ψw).

Answer 3

water potential

Question 4

is the tendency of water to move by osmosis

Answer 4

solute potential

Question 5

the pressure inside the cell

Answer 5

turgor pressure

Question 6

refers to any kind of physical pressure on water

Answer 6

pressure potential

Question 7

In moist soil, the water that fills crevices between soil particles usually contains relatively few solutes and normally is under little pressure. As a result, its water potential tends to be high relative to the water potential found in a plant’s roots, which is higher in solutes

Answer 7

remember

Question 8

states that water is pulled to the tops of trees along a water-potential gradient, via forces generated by transpiration at leaf surfaces

Answer 8

cohesion-tension theory