InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 651. |
The property of semipermeability belongs toA. cell wallB. plasma membraneC. mitochondria onlyD. None of these |
| Answer» Correct Answer - B | |
| 652. |
Supply ends in transport of solute areA. Green leaves and storage organsB. Root and stemC. Xylem and phloemD. Homones and enyme |
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Answer» Correct Answer - a |
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| 653. |
The movemenbt of matrials through the vascular tissue of plants is called.A. TranpirationB. TranslocationC. TranscriptionD. Transduction |
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Answer» Correct Answer - b |
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| 654. |
Which of the following statements is incrorrectA. Water and salts are taken simultaneously by root hairsB. Plants absorb one thing at a time either water or inorganic saltC. Plants absorb excess quantity of waterD. All of the above |
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Answer» Correct Answer - B |
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| 655. |
ImbibitionA. Both diffusion and capillary actionB. only diffusionC. only capillary actionD. none of the above |
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Answer» Correct Answer - a |
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| 656. |
In the process of osmosisA. both cell wall and photoplasm will act as a membraneB.C. only outermost layer of protoplasm act as a membraneD. only cell wall act as a membrane |
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Answer» Correct Answer - c |
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| 657. |
Osmotic PressureA. XerophytesB. LithophytesC. halophytesD. Mesophytes |
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Answer» Correct Answer - c |
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| 658. |
Root hair absorb water from the soil on account ofA. Turgor pressureB. Osmotic pressureC. Suction pressureD. Root pressure |
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Answer» Correct Answer - C |
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| 659. |
Which of the following is an example of imbibition?A. Uptake or water by root hairB. Exchange of gases in stomataC. Swelling of seed when put in soilD. Opening of stomata |
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Answer» Correct Answer - c |
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| 660. |
Special type of diffusion when water is absorbed by solids is calledA. osmosisB. plasmolysisC. Both (a) and (b)D. imbibition |
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Answer» Correct Answer - D Imbibtion is a special type of diffusion, in which when a solid substance (such as seed) is placed in water, it adsorbs the water molecules and swells up substantially. It always results in release of heat. |
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| 661. |
Find the incorrect match among the following. |
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Answer» Correct Answer - B Both facilitated diffusion and active transport are under hormonal control. |
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| 662. |
The ability to rise in thin tubes and Ability to resist a pulling force are respectively referred to asA. Tensile strength and capillarityB. Adhesion and capillarityC. Cohesion and adhesionD. Capillarity and tensile strength |
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Answer» Correct Answer - D |
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| 663. |
Imbibition is a special type of diffusion |
| Answer» Correct Answer - True | |
| 664. |
The ability to rise in thin tubes and Ability to resist a pulling force are respectively referred to asA. Tensile strength and capillarityB. Cohesion and adhesionC. Capillarity and tensile strengthD. Adhesion and capillarity |
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Answer» Correct Answer - C Anility to rise in thin tubes and ability to resist pulling force are capillarity and tensile strength respectively. |
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| 665. |
Pumps are related toA. Simple diffusionB. Facilitated diffusionC. Active transportD. Osmosis |
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Answer» Correct Answer - C Pumps are related to active transport. |
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| 666. |
What are pumps ? |
| Answer» Pumps are proteins tht use energy to carry substances across the cell membrane against concentration gradient . | |
| 667. |
Write two uses of water in plants. |
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Answer» (i) It is used , during photosynthesis in light reaction and formation of carbohydrates . (ii) It helps the plants to maintain their temperature by transpiration . |
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| 668. |
Which factor influences activ transport of substances across the membrane ? |
| Answer» Active transport depends on availabiliyt of protein , transporters . More the protein transporters available , higher is the rate of active transport while the rate decreases as these are used or saturated , during transport. | |
| 669. |
Match and find the correct combination A. a - iv, b - iii, c - ii, d - iB. a - iv, b - v, c - ii, d - iiiC. a - iii, b - iv, c - v, d - iiD. a - iii, b - i, c - iv, d - ii |
| Answer» Correct Answer - A | |
| 670. |
The correct ascending sequence with respect to their water potential is `I. pi= - 0.8 " Mpa," P= +0.4 " Mpa"` II `pi= -1.0` Mp a, P=+ 0.5 MP a `III. Pi`=-0.9 MP a, P = +0.2 MP a IV. `pi`=-0.3 MP a, P= + 0.2 MP aA. I,II,III, IVB. III,II, I,IVC. III,I,II,IVD. III,IV,II,I |
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Answer» Correct Answer - B The correct ascending sequence of cells with respect to their water potential is III, II, I and IV. Because water potential `(Psi_(w))=pi` (solute potential)+P(pressure potential) |
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| 671. |
The shot pressure is measured byA. G. M. CounterB. LuxmeterC. Pressure bomb techniqueD. Bomb calorimeter |
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Answer» Correct Answer - C |
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| 672. |
A column of water within xylem vessels of tall trees does not break under its weight because ofA. Tensile strength of waterB. Lignification of xylem vesselsC. Positive root pressureD. Dissolved sugars in water |
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Answer» Correct Answer - A |
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| 673. |
Supply of excess fertilizer and watering of a grass lawn causes browning of grass leaves due toA. Decreased photosynthesisB. Water-logging of soilC. Leaching of fertilizer to lower soil strataD. Osmosis and death of root . |
| Answer» Correct Answer - D | |
| 674. |
Water will be absorbed by root hairs when the external medium isA. HypotonicB. HypertonicC. IsotonicD. Viscous. |
| Answer» Correct Answer - A | |
| 675. |
Who proposed that the upward and downward movement of materials take placeA. sacksB. boehmC. dixonD. curtis |
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Answer» Correct Answer - d |
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| 676. |
The process by which water is absorbed by solid like colloids causing them to increase in volume isA. osmosisB. plasmolysisC. imbibitionD. diffusion |
| Answer» Correct Answer - C | |
| 677. |
Which of the following is not true for active transportA. It is a chemical processB. Energy is required for this process which is obtained in the form of ATPC. It takes place through special organic molecules called carrier moleculesD. This process is not modified by enzymes |
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Answer» Correct Answer - A |
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| 678. |
Upward movement of water in plants is calledA. SuckingB. Ascent of sapC. TranslocationD. None of these |
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Answer» Correct Answer - B |
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| 679. |
The process by which water is absorbed by solid like colloids causing them to increase in volume isA. PlasmolysisB. DiffusionC. OsmosisD. Imbibition |
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Answer» Correct Answer - D The process by which water is absorbed by solid like colloids causing them to increase in volume is called imbibition. |
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| 680. |
The direction of the conduction of food through phloem isA. from below upwardsB. from top to bottomC. from leaves to rootsD. phloem never conducts food |
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Answer» Correct Answer - c |
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| 681. |
The pressure exerted by the protoplasm against the cell wall is known asA. wall pressureB. turgor pressureC. diffusion pressureD. osmotic pressure |
| Answer» Correct Answer - B | |
| 682. |
The diffusion pressure deficit of a cell protoplasm is equal toA. wall pressureB. turgor pressureC. osmotic pressureD. suction pressure |
| Answer» Correct Answer - D | |
| 683. |
A cell will absorb water and show deplasmolysis when it is immersed inA. isotonic solutionB. hypertonic solutionC. hypotonic solutionD. any of the above |
| Answer» Correct Answer - C | |
| 684. |
A cell will absorb water and show deplasmolysis when it is immersed inA. isotonic solutionB. hypertonic solutionC. hypotonic solutionD. aquaregia |
| Answer» Correct Answer - C | |
| 685. |
Water potential can be obtained byA. OP+TPB. OP=WPC. `P+pi`D. OP-DPD |
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Answer» Correct Answer - C |
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| 686. |
Assertion : Arid areas are not suitable for crops Reason: Antityranspiratnts are used for planting crops in arid regions. |
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Answer» Correct Answer - b |
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| 687. |
Which of the following plants economises transpirational loss of waterA. `C_(3)`B. `C_(4)`C. Both equallyD. `C_(2)` |
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Answer» Correct Answer - B |
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| 688. |
Unidirection flow fo water minerals, some organic nitrogen and hormones occurs throughA. xylemB. phloemC. rootD. vascular tissue. |
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Answer» Correct Answer - A There are two types of vascular tissues in plants, xylem and phloem. Xylem translocation is mainly from roots to aerial parts. It passes water with mineral salts, some organic nitrogen and hormones Phloem translocation organic substances and some inorganic solutes first from leaves ot all other parts of the plant and storage organs. Storage organs re-export organic nutrients to those parts which require the same such as newly formed leaves and fruits. |
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| 689. |
The manufactured food in a green plant moves from the leaves ot other parts throughA. xylemB. phloemC. cortexD. pith |
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Answer» Correct Answer - B The sugars synthesized in leaves (as a result of photosyntesis) are translocated downwards, upwards and laterally to storage organs mainly through phloem. These sugars are translocated in the form of sucrose. |
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| 690. |
Water infiltration will be slowest inA. Black cotton soilB. Sandy soilC. Red soilD. Loamy soil |
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Answer» Correct Answer - A |
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| 691. |
Long distance transport of water, minerals and food is gernerally carried out byA. Diffusion onlyB. Active transport onlyC. Bulk flow system or mass flow systemD. Cytoplasmic streming supplemented by active transport |
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Answer» Correct Answer - C Long distance transport of water, minerals and food is generally carried out by bulk flow system or mass flow sysmtem |
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| 692. |
When a cell is plasmolysed, it becomesA. flaccid and its TP becomes zeroB. turgid and its TP becomes zeroC. turgid and TP becomes equal to OPD. flaccid and DPD becomes zero |
| Answer» Correct Answer - A | |
| 693. |
Function of companion cells isA. Providing energy to sieve elements for active transportB. Providing water to phloemC. Loading of sucrose into sieve elements by passive transportD. Loading of sucrose into sieve elements |
| Answer» Correct Answer - D | |
| 694. |
Transport of food material in higher plants takes place throughA. Companion cellsB. Transfusion tissueC. TracheidsD. Sieve elements |
| Answer» Correct Answer - D | |
| 695. |
When a cell is plasmolysed, it becomesA. flaccid and its TP becomes 0B. turgid and its TP becomes 0C. turgid and TP becomes equal to OPD. flaccid and DPD becomes 0 |
| Answer» Correct Answer - A | |
| 696. |
Much hypothesis is based onA. Translocation of food due to TP gradient and imbibition forceB. Tranfolcation of food due to Turgor Pressure (TP) gradientC. Translocation of food due to imbibition forceD. None of these |
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Answer» Correct Answer - b |
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| 697. |
Active transport is characterized byA. Requires special membrane proteinsB. Highly selectiveC. Requires ATP energyD. All of the above |
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Answer» Correct Answer - D |
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| 698. |
Which of the following is the main point in disfavour of Munch theoryA. Tranlocation is a pure physiological processB. Translocation is a pure physical processC. Explination of sugar transfport is not givenD. None of these |
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Answer» Correct Answer - c |
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| 699. |
Plasmolysis occurs when the cell is placed inA. isotonic solutionB. hypotonic solutionC. Hypertonic solutionD. none of the above . |
| Answer» Correct Answer - C | |
| 700. |
The water potential increases due toA. addition of solutesB. pressureC. guttationD. condensation |
| Answer» Correct Answer - B | |