During plasmolysis:
1. Water is lost from the cytoplasm but not from the vacuole
2. Water is first lost from the cytoplasm and then from the vacuole
3. Water is first lost from the vacuole and then from the cytoplasm
4. Water is lost from the vacuole but not from the cytoplasm
Which of the following is/are essential for imbibitions to take place?
I. Water potential gradient between the absorbent and the liquid imbibed
II. Affinity between the adsorbent and the liquid
1. Only II
2. Only I
3. Both I and II
4. None
Consider the following:
I. A decrease in pressure on cell exerted by the wall
II. An increase in water potential of the surroundings
III. The uptake of solutes by the cell
IV. An increase in the tension on the surrounding solution
Which of these would contribute to the uptake of water by the cell?
1. I, II, III
2. II, III, IV
3. I, II, IV
4. I, III, IV
What is true for both symplast and apoplast movement of water in plants?
1. An equal rate of transport
2. Being down a potential gradient
3. Assistance by cytoplasmic streaming
4.Conduction through interconnected protoplasts
In flowering plants, transport over longer distances proceeds through the vascular system and is called
1. Transportation
2. Translocation
3. Transfusion
4. Transmission
Transport of water and minerals is essentially ……a...from roots to stems. Organic and mineral nutrients however, undergo…b…… transport.
(1) a-Multidirectional
(2) a-Bidirectional
(3) b- Mulltidirectional
(4) b- Unidirectional
Diffusion
Find the wrong option:
(1) Passive
(2) Over shorter distances
(3) No energy expenditure
(4) Movement in ordered fashion
Diffusion
Find the wrong one.
(1) Dependent on a living system
(2) Obvious in gases and liquids
(3) In solids rather than of solids is more likely
(4) Diffusion is very important in plants since it is the only means for gaseous movement within the plant body
Which of the following is not parameter to affect diffusion concentration?
The diffusion of any substance across a membrane depends on