Q. Which of the following facilities opening of stomatal aperture? (a) Decrease in turgidity of guard cells. (b) Radial orientation of cellulose microfibrils in the cell wall of guard cells…
Q. 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 of the…
Q. A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results…
Q. Transpiration and root pressure cause water to rise in plants by : (a) Pushing and pulling it respectively (b) Pulling it upward (c) Pulling and pushing it respectively (d)…