Transport in Plants

Movement and accumulation of ions across a membrane against their concentration gradient can be explained by

1. Facilitated Diffusion
2. Passive Transport
3. Active Transport
4. Osmosis

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

1. Both Statement I and Statement II are incorrect
2. Statement I is correct but Statement II is incorrect
3. Statement I is incorrect but Statement II is correct
4. Both Statement I and Statement II are correct

Match List I with List II :

1. A-IV, B-III, C-II, D-I
2. A-III, B-I, C-IV, D-II
3. A-II, B-I, C-IV, D-III
4. A-II, B-IV, C-I, D-III

"Girdling Experiment" was performed by Plant Physiologists to identify the plant tissue through which:

1. water is transported
2. food is transported
3. for both water and food transportation
4. osmosis is observed

Which of the following is not observed during apoplastic pathway?

1. Movement of water occurs through intercellular spaces and wall of the cells
2. The movement does not involve crossing of cell membrane
3. The movement is aided by cytoplasmic streaming
4. Apoplast is continuous and does not provide any barrier to water movement

Addition of more solutes in a given solution will:

1. raise its water potential
2. lower its water potential
3. make its water potential zero
4. not affect the water potential at all

When a carrier protein facilitates the movement of two molecules across the membrane in same direction, it is called

1. Symport
2. Uniport
3. Transport
4. Antiport

The ascent of xylem sap in plants is mainly accomplished by the

1. root pressure
2. size of the stomatal aperture
3. distribution of stomata on the upper and lower epidermis
4. cohesion and adhesion between water molecules

Match List-I with List-II : Choose the correct answer from the options given below.

1. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
2. (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
4. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is

1. Transpiration
2. Root pressure
3. Imbibition
4. Plasmolysis