Chapter 02: Adaptations to Water and Nutrients

Question 0

epiphyte (n.)

Answer 0

a plant that grows on other plants (esp. on trees)

Question 1

osmotic potential (n.)

Answer 1

the force by which an aqueous solution attracts H2O by osmosis

Question 2

water (matric) potential (n.)

Answer 2

the strength of the forces holding water to soil particles; the potential energy of water per unit volume

Question 3

Which force is stronger, adhesion or cohesion?

Answer 3

Adhesion > cohesion

Question 4

field capacity (n.)

Answer 4

the amount of water held against gravitational pull by water potential; amount of water available to a plant

Question 5

wilting point (n.)

Answer 5

minimum amount of soil moisture required to avoid wilting

Question 6

What is a general value for wilting point?

Answer 6

-1.4 MPa

Question 7

What model describes the movement of water in plants?

Answer 7

Transpiration-cohesion-adhesion model

Question 8

What can plants use to maintain salt/water balance?

Answer 8

Salt extruders (found in mangroves)

Question 9

What things must living things regulate with water regulation?

Answer 9

Sodium and nitrogen regulation

Question 10

What properties of water explain its use as the medium of life?

Answer 10

Thermal properties, density, viscosity, solvent capacity, and acidity