Q. Guttation is the loss of water in : (a) Liquid form containing dissolved minerals. (b) Liquid form without dissolved minerals. (c) Vapour form with minerals. (d) Vapour form without…
Q. Passage cells helps : Transport of water towards pericycle. Transport of water towards epiblema. Absorption of water from soil. Passage of CO2 towards stomata. Solution : Correct option : A Passage…
Q. Which one gives the most valid and recent explanation for stomatal movements? (a) Guard cell photosynthesis (b) Transpiration (c) Potassium influx and efflux (d) Starch hydrolysis Solution : Correct…
Q. Osmotic expansion of a cell kept in water is chiefly regulated by : (a) Vacuoles (b) Plastids (c) Ribosomes (d) Mitochondria Solution : Correct option : A The vacuole…