Transpiration

Question 1

Transpiration

Answer 1

process of plants losing water by evaporation through their stomata

Question 2

Water Potential

Answer 2

water potential is the potential energy of water to move across a membrane and is measured in units of pressure called pascals

Question 3

What is the formula for water potential?

Answer 3

water potential = solute potential + pressure potential

Question 4

Solute Potential

Answer 4

inversely related to solute concentration; meaning if solute concentration increases solute potential decreases and vice versa

Question 5

Pressure Potential

Answer 5

the amount of pressure in the solution

Question 6

What happens if solute concentration increases?

Answer 6

water potential decreases

Question 7

What happens if pressure increases?

Answer 7

water potential increases

Question 8

Osmosis

Answer 8

water will move from a solution of higher water potential to lower water potential

Question 9

Where does water exit?

Answer 9

through the stomata (which is located on the leaf)

Question 10

What is the cohesive nature of water?

Answer 10

basically means water sticks to itself

Question 11

Water Moving up the Plant

Answer 11

negative pressure potential; cohesion; as water transpires` out the pressure potential decreases allowing the water potential to increase and water is pulled up

Question 12

What does stomata do?

Answer 12

let out water and take in carbon dioxide

Question 13

What controls the opening of stomata?

Answer 13

guard cells

Question 14

How does the stomata react to sunrise and sunset?

Answer 14

sunrise- stomata open to start photosynthesis
sunset- stomata close because there is no more light for photosynthesis

Question 15

Waxy Cuticle

Answer 15

leaf and stem epidermis has waxy cuticle; minimizes water loss but prevents gas exchange; which is why stomata are important

Question 16

Hypotonic

Answer 16

less concentration; more water

Question 17

Hypertonic

Answer 17

more concentration; less water

Question 18

Isotonic

Answer 18

equal solutes and water

Question 19

Humidity and Transpiration

Answer 19

HIgh humidity decreases transpiration and low humidity increases transpiration

Question 20

Temperature and Transpiration

Answer 20

warmer temperatures increase transpiration, but if temps are too high and the plant risks losing too much water it will slow transpiration

Question 21

Wind and Transpiration

Answer 21

as wind increases it increase transpiration; if wind decreases temperature then it will decrease transpiration

Question 22

Which one has more water or is hypotonic? Solution that has -1 water potential or solution that has -3 water potential

Answer 22

-1; if a water potential is less negative is means that the water potential is higher because there is more water to move around

Question 23

Which one has more solute or is hypertonic? Solution that has -1 water potential or solution that has -3 water potential

Answer 23

-3; if a water potential is more negative it more than likely means that it has more solute in it and there is less water to move around