Question

Transpiration takes place in plants through the stomata (pores) in the leaves. Doing which of the following will completely stop transpiration from taking place?
1 keeping the plant in a cool place
2 applying grease on the leaves
3 spraying the leaves with water
4 keeping the plant in the shade

Answer 1

Answer:

4

Explanation:

Stomatal pore size is regulated by guard cells. Guard cells are known to have chloroplast, which are involved in photosynthesis. The photosynthetic synthesis of sugars in guard cells increase solute potential and allows these cells to take up water due to reduced water potential. When water enters the guard cells, they swell and stomata open. When light intensity is low, the photosynthetic synthesis of sugars in guard cells will be low and guard cells will not gain enough turgor for opening of stomata.

Answer 2

Applying grease as it will create a top layer which will block the pores. Hence, transpiration will not take place