The principal transpiring organ of a plant is:

Which of the following is $NOT$ included in the stomatal apparatus?

Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening,carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of the following options.

The ultimate force which propels water against gravity is generated by

What is the stomatal apparatus? Explain the structure of stomata with a labelled diagram.

In both transpiration and evaporation,water is lost in the form of vapour,yet they differ because: