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Q. No.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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Water vapour diffuses out from sub stomatal cavity into atmosphere because
1. Positive pressure is created
2. Water has high tensile strength
3. Atmosphere has maximum saturation of water
4. Sub-stomatal cavity has higher \(\psi_{w}\)
1. Positive pressure is created
2. Water has high tensile strength
3. Atmosphere has maximum saturation of water
4. Sub-stomatal cavity has higher \(\psi_{w}\)
Subtopic: Transpiration & Guttation |
59%
From NCERT
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Plant obtain their carbon and most of their oxygen from
1. CO2 in the atmosphere
2. Water and minerals in the soil
3. Reduced carbons absorbed through epidermis
4. Oxygenated minerals in the epidermis
1. CO2 in the atmosphere
2. Water and minerals in the soil
3. Reduced carbons absorbed through epidermis
4. Oxygenated minerals in the epidermis
Subtopic: Uptake and Transport of Mineral Nutrients |
66%
From NCERT
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Tracheary elements help in capillarity because they
1. have non-polar surface
2. can store a large amount of water
3. have smaller diameter
4. can create negative hydrostatic pressure
1. have non-polar surface
2. can store a large amount of water
3. have smaller diameter
4. can create negative hydrostatic pressure
Subtopic: Transpiration & Guttation |
55%
From NCERT
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