In pea plant,the type of stomata is known as:

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

$(i)$ The ...$a$... help in maintaining the pressure gradient in the sieve tubes.
$(ii)$ Stomata regulate the process of ....$b$..... and gaseous exchange.

Transpiration in plants occurs through the following $EXCEPT$ . . . . . . .

By which process is water lost from the plants in the form of water droplets?

The opening and closing of stomata are due to: