Factors That Effect the rate Transpiration

Question 1

Light intensity

Answer 1

Transpiration increases in bright light .

Stomata open wider to allow more CO2 into the leaf for photosynthesis . More water is therefore able to evaporate

Question 2

Temperature

Answer 2

Transpiration is faster because higher temperatures give molecules more energy

Evaporation and diffusion occurs faster at higher temperatures as enzymes can catalyse more reactions

Question 3

Air movement

Answer 3

Transpiration is faster in windier conditions

Water vapor is removed quickly by the air speeding up diffusion

Question 4

Humidity

Answer 4

Transpiration is slower in warmer conditions

The more water in the air slows the rate of water leaving the plant as the molecules leave from a high concentration gradient to a lower concentration gradient