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Q. No.When a flaccid plant cell is placed in pure water
1.
Water enters into the cell eventually rupturing it
2.
Water enters into the cell and turgor pressure is developed
3.
Water comes out of the cell making it plasmolysed
4.
Net movement of water will be zero
Subtopic: Plasmolysis |
52%
From NCERT
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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
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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