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Q. No.A plant cell with \(\psi_{s}=-0.03\ MPa\) and \(\psi_{p}=-0.25\ MPa\) is placed in pure water at standard temperature and pressure. The net movement of water will be
1. into the cell
2. out of the cell
3. zero
4. first inside the cell and then out of the cell
Subtopic: Water Potential Concept |
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Match the given columns and select the correct option
1. a-ii, b-i, c-iii, d-iv
2. a-ii, b-iv, c-iii, d-i
3. a-iii, b-i, c-iv, d-iv
4. a-iv, b-i, c-ii, d-iii
| (a) | Imbibition pressure | i. | Responsible for enlargement and extension growth of cell |
| (b) | Turgor pressure | ii. | Used by prehistoric man to split rocks and boulder |
| (c) | Mass or bulk inflow | iii. | Depends on pressure differences |
| (d) | Osmosis | iv. | Depends on both pressure and concentration gradient |
1. a-ii, b-i, c-iii, d-iv
2. a-ii, b-iv, c-iii, d-i
3. a-iii, b-i, c-iv, d-iv
4. a-iv, b-i, c-ii, d-iii
Subtopic: Imbibition |
71%
From NCERT
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Which of the following structures help in apoplast movement?
a. Intercellular spaces
b. Vessel
c. Tracheids
d. Plasmodesmata
e. Casparian strip
f. Companion cell
1. a only
2. All
3. a,b,c only
4. a,b,c and f only
a. Intercellular spaces
b. Vessel
c. Tracheids
d. Plasmodesmata
e. Casparian strip
f. Companion cell
1. a only
2. All
3. a,b,c only
4. a,b,c and f only
Subtopic: Water Absorption |
52%
From NCERT
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External solution is A if it is B concentrated that cytoplasm.
| A | B | |
| 1. | Hypotonic | Less |
| 2. | Hypertonic | More |
| 3. | Hypotonic | Equally |
| 4. | Hypertonic | Less |
Subtopic: Plasmolysis |
55%
From NCERT
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Small-sized proteins can pass through
1. Only pumps
2. Any gated channel
3. Porins
4. Lipid bilayer
1. Only pumps
2. Any gated channel
3. Porins
4. Lipid bilayer
Subtopic: Facilitated Diffusion |
69%
From NCERT
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Membrane transport inhibitors can inhibit the transport by reacting with
1. Lipid bilayer
2. Protein side chain
3. \(\alpha\) - carbon of amino acids
4. Oligosaccharide attached to protein
1. Lipid bilayer
2. Protein side chain
3. \(\alpha\) - carbon of amino acids
4. Oligosaccharide attached to protein
Subtopic: Means of Transport: Active |
64%
From NCERT
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Xylem exudate does not contain
1. Small amount of P and S carried as organic compound
2. Amino acids
3. Proteins
4. Minerals
1. Small amount of P and S carried as organic compound
2. Amino acids
3. Proteins
4. Minerals
Subtopic: Uptake and Transport of Mineral Nutrients |
53%
From NCERT
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Choose the characteristics associated with root pressure.
1. Only d
2. a,c and d only
3. a and d only
4. b and d only
| a. | Pressure hydrostatic pressure. |
| b. | Develops due to concentration of sugars in roots. |
| c. | Accounts for bulk movement rate of up to 15 metres per hour. |
| d. | Evaporation decreases root pressure. |
1. Only d
2. a,c and d only
3. a and d only
4. b and d only
Subtopic: Transpiration & Guttation |
From NCERT
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A botanist placed wet cobalt chloride strip on upper and lower surface of leaf of 2 different plants, say A and B. Wet cobalt chloride turn its colour from pink to blue when it is dried. Time taken to turn the colour of cobalt chloride is mentioned below.
Find the correct conclusion
1. Plant A have more stomata on upper surface.
2. Plant B have less stomata on lower surface.
3. Plant A have less stomata on upper surface.
4. Plant B can't have equal number of stomata on both surfaces
| Upper surface | Lower surface | |
| Plant A | 12 mins | 2 mins |
| Plant B | 2 mins | 2.3 mins |
Find the correct conclusion
1. Plant A have more stomata on upper surface.
2. Plant B have less stomata on lower surface.
3. Plant A have less stomata on upper surface.
4. Plant B can't have equal number of stomata on both surfaces
Subtopic: Transpiration & Guttation |
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Time required and water loss to fix 1 g of CO2 by plant A and B of same weight is given below.
Choose the correct option
1. Both are C3 plants
2. Both are C4 plants
3. Plant A is C4 while plant B is C3
4. Plant B is C4 while platn is C3
| Time required | Water loss | |
| A | 5 hours | 1.5 litre |
| B | 10 hours | 3 litre |
Choose the correct option
1. Both are C3 plants
2. Both are C4 plants
3. Plant A is C4 while plant B is C3
4. Plant B is C4 while platn is C3
Subtopic: Photosynthesis Transpiration Compromise & Mineral Translocation |
58%
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