what factors effect the rate of transpiration?


1) Wind- strong winds blow the evapourated water away from the leaf so that when it condenses, it will not go back into the leaf via the stoma

2) Temperature- high temperatures lead to higher rates of transpiration as water will evapourate from the spongy mesophyll cell and diffuse out of the open stomata down a concentration gradient

3)Humidity- High levels of humidity (atmospeheric water vapour) in the atmosphere will decrease transpiration rate because there will be a lower concentration gradient between inside and outside of the leaf for the water vapour to diffuse down into the atmosphere

4) Time of day- In the day when the sun is shining,photosynthesis occurs in sunlight, so there is a higher rate of transpiration because the stomata are open to facilitate gas exchange so the plant can take in CO2, whereas at night, with no sun, no photosynthesis happens so th plat doesn't need to take in CO2 for photosynthesis, so stomata close and therefore water can't leave

Answered by Jasmine M. Biology tutor

7806 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

What is the process of maintaining a constant internal enviornment, and why does it matter?


Amy has cystic fibrosis which is caused by a recessive allele. Her partner is heterozygous for cystic fibrosis. What is the chance that her future child has cystic fibrosis?


What is an allele?


How does vaccination lead to immunity?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences