Problem 70
The best example of imbibition is (a) Absorption of water by seed (b) Absorption of water by dry wood (c) Both (a) and (b) (d) None of these
Problem 71
Which of the following is correct about imbibitions? (a) It requires \(\psi \omega\) gradient between the absorbent and the liquid imbibed. (b) It requires affinity between the absorbent and the liquid. (c) Imbibition pressure is produced by the swelling of wood and in turn used by prchistoric man to split rocks and boulders. (d) All the above
Problem 72
The path of the movement of water is demonstrated by using (a) Solution containing pure water (b) Solution of water and mineral (c) Dye (colour) dissolved in water (d) All of these
Problem 73
Simple long distance transport cannot be achieved by (a) Diffusion (b) Facilitated diffusion (c) Active transport (d) All of these
Problem 74
Water, mineral and food are generally moved by over large distance by (a) Simple diffusion (b) Facilitated diffusion (c) Active transport (d) Bulk flow or mass flow
Problem 76
Bulk flow can be achieved by (a) Positive hydrostatic pressure gradient (b) Negative hydrostatic pressure gradient (suction) (c) Both (a) and (b) (d) None of these
Problem 77
Xylem is associated with the translocation of (a) Water (b) Mineral (c) Some organic nitrogen and hormone (d) All of these
Problem 78
Which of the following is incorrect about apoplastic pathway? (a) Movement of water takes place through intercellular spaces and the walls of cells. (b) Movement depends on the gradient. (c) Mass flow occurs due to adhesive and cohesive property of water. (d) This pathway provides barrier to water movement.
Problem 79
During symplastic pathway water moves through (a) Cytoplasm (b) Plasmodesmata (c) Cell membranc (d) All of thesc
Problem 80
Which of the following is incorrect about symplastic pathway? (a) Movement of water is relatively slower. (b) Movement is down the concentration gradient. (c) It may be aided by cytoplasmic streaming. (d) Most of the water flow in root occurs by this pathway.
