Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • How do environmental factors such as light and humidity affect stomatal movement?

How do environmental factors such as light and humidity affect stomatal movement?

 

Answers (1)

best_answer

The environmental factors such as humidity and light have a major effect on stomatal movement. It is important for controlling plant water balance and gas exchange in the following ways: 

  1. Light: The guard cell's phototropins are triggered by the blue light and result in proton pumps that produce an electrochemical gradient.  The water enters the cells through osmosis as a result of the driving absorption of K? and Cl?.  In guard cells, the turgor pressure causes stomatal opening, allowing CO? to enter for photosynthesis.
  2. Humidity: The dynamic movement of stomata helps in regulating the balance of CO? uptake and water conservation. The high humidity keeps the stomata open by lowering the transpiration gradient and helping the guard cells in holding onto water and remaining turgid. On the other hand, low humidity causes turgor pressure to decrease and stomatal closure to preserve water.
Posted by

Saniya Khatri

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

CM MK Stalin challenges union home minister Amit Shah on NEET, delimitation
anam-khan

Kota: NEET aspirant dies of heart attack; police recover prescriptions, medicines from room
anam-khan

Assam government proposes measures to ensure fair NEET exams amid malpractice concerns

Latest Question