B4

Question 1

How does transpiration increase with higher light intensity

Answer 1

Stomata close in the dark and open in the light

More light = more open stomata = more water evaporating

Question 2

How does increased temperature increase transpiration

Answer 2

Higher temperature = faster particles

Water molecules move faster -> evaporate quicker

Question 3

How does increased air movement increase transpiration

Answer 3

Air moving over leaf moves evaporated water
Uneven levels of water
Diffusion happens to increase evaporated water outside leaf to make levels even

Question 4

How does decreased humidity increase transpiration

Answer 4

Humidity is evaporated water outside leaf
Less humidity means the water levels outside are less than water levels inside plant
Transpiration increases to make it even

Question 5

What 4 factors increase the rate of transpiration

Answer 5

increase in light intensity
increase in temperature
increase in air movement
decrease in humidity.