Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

PLSCI 101 > Water > Flashcards

Water Flashcards

1
Q

Asymmetric shape of water molecules

A

Dipole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What causes Surface tension?

A

Hydrogen bonding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What happens to density and volume when water freezes?

A

Less dense, more volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Water’s ability to absorb a large amount of heat without much change in temp

A

High specific heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

When soil pores are filled to the max with water

A

Saturated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What effects water movement?

A

Gravity, adhesion, cohesion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Capillary action

A

Adhesion and cohesion and moved water in any direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Capillary rise

A

Loss of water by evaporation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Water potential

A

High to low

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Negative pressure

A

Tension or suction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does tension do to water potential

A

Lowers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is atm equal to?

A

.101 MPa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What determines soil water potential?

A

Gravity, matric forces, osmotic forces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are matric forces

A

Adhesion and cohesion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are osmotic forces?

A

Dissolved salts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What causes water to spread laterally when soil is moist

A

Matric potential

17
Q

What causes fertilizer burn?

A

High concentrations of salt creates osmotic potential that inhibits water uptake

18
Q

When soil is saturated, water tension is…

A

Zero until drainage, plant use, or evaporation

19
Q

When adhesive and cohesive forces are equal to gravity

A

Field capacity

20
Q

Permanent wilting point

A

Soil moisture content when a plant wilts and can’t recover even with optimal water conditions

21
Q

Soil texture determines relationship between…

A

Soil water content and soil moisture tension

22
Q

Hygroscopic water

A

Adsorbed water of thin, tightly bound layer surrounding soil particles. Moisture tension is too high

23
Q

Crystal lattice water

A

Less available to plants than hygroscopic water and can only be removed by sufficient heat

24
Q

Available water range

A

Soil moisture between field capacity and permanent wilting point

25
Q

Is water between saturated and field capacity available and why?

A

No because lost through drainage

26
Q

Is PWP the same for all plant species

A

No

27
Q

Is water closer to field capacity or PWP more available?

A

Field capacity

28
Q

What moves water up the stem

A

Cohesion and tension

29
Q

What carries minerals up a stem?

A

Xylem streams

30
Q

What is the movement of water from roots to stem to leaves to atmosphere

A

Transpiration stream

31
Q

What causes transpiration pull

A

Evaporation from outer surface of mesophyll cells

32
Q

Is osmosis used that often?

A

No it’s relatively small

33
Q

What moves minerals through impermeable membranes in roots

A

Active transport through energy from respiration

34
Q

Girdle

A

Phloem tissue is cut so below is starved while above is okay

PLSCI 101 (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions