Q. Water is lost in a liquid state in some plants through hydathodes. Hydathodes : (a) Remain closed at night (b) Remain closed during day (c) Remain always open (d)…
Q. An antitranspirant is : (a) Cobalt chloride (b) Mercury (c) Potassium (d) Phenyl mercuric acetate Solution : Correct option : D Antitranspirant are the chemical compounds or materials which…
Q. Potometer works on the principle of : Osmotic pressure Amount of water absorbed equals the amount transpired Root pressure Potential difference between tip of tube and that of plant…
Q. A cell when dipped in 0.5 M sucrose solution has no effect but when the same cell is dipped in 0.5 M NaCl solution, it will : Increase in…