The cells surrounding the stomatal pore are

In the given figure,which component has thin outer walls and highly thickened inner walls?

Select the correct option regarding the factors affecting transpiration.
$I -$ Temperature
$II -$ Light
$III -$ Structure of stomata
$IV -$ Humidity
$V -$ Number and distribution of stomata
$VI -$ Percentage of open stomata
$VII -$ Water status of the plant
$VIII -$ Wind speed
Identify the external factors and internal factors respectively.

What will be the effect of accumulation of potassium ions in guard cells?

Increase in temperature and velocity of wind cause an increase in transpiration initially but later it slows down,because

What happens if a plant in a potometer is kept under a fan or in bright light? The bubble of the potometer would: