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.
| 401. |
Supply ends in transport of solutes areA. green leavesB. root and stemC. xylem and phloemD. hormones and enzymes |
| Answer» Correct Answer - B | |
| 402. |
The passive transport of water and solutes in plants may take place viaA. diffusionB. osmosisC. plasmolysisD. All of these |
| Answer» Correct Answer - D | |
| 403. |
Active transport involesA. expenditure of energyB. uphill transportC. downhill transportD. Both (a) and (b) |
| Answer» Correct Answer - D | |
| 404. |
Osmosis involesA. Diffusion of suspended particles from higher to lower concentrationB. Diffusion of suspended particles from lower to higher concentrationC. Diffusion of water from more to less conncetrated sideD. Diffusion of water from less to more conncetrated side |
| Answer» Correct Answer - D | |
| 405. |
Osmtic potential is depicted asA. `(-)`B. `(+)`C. XD. `(div)` |
| Answer» Correct Answer - A | |
| 406. |
If a cell A with OP 10 bars and TP 4 bars is connected to cells, B, C and D having OP and TP respectively 4 and 4, 10 and 5 and 7 and 3 bars, the flow of water will beA. C to A, B and DB. B to A,C and DC. D to A,B and CD. A to B,C and D |
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Answer» Correct Answer - B DPD =OP -TP For cell A,DPD=10-4=6 For cell B, DPD=4-4=0 For cell, C DPD=10-5=5 For cell, D DP7-3=4 Water always flow from low DPD to higher DPD then flow of water will be B to A, C and B |
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| 407. |
Osmotic potntial is depicted asA. `(-)`B. `(+)`C. `(XX)`D. `(-:)` |
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Answer» Correct Answer - A Osmotic potential is depicted as (-) |
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| 408. |
When a bark of tissue is cut from stem, of which the vascular tissue is removedA. XylemB. PhloemC. ParenchymaD. None of these |
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Answer» Correct Answer - B |
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| 409. |
Pressure inside which tissue is highestA. sieve tubesB. xylemC. endodermisD. Both (a) and (c ) |
| Answer» Correct Answer - A | |
| 410. |
Which of the following is not correct in mass flow hypothesis ?A. It is the accepted mechanis for translocation of sugars form source to sinkB. As glucose is prepared at source it is converted to sucroseC. Sucrose is actively loaded into a sieve tubeD. The process of loading at source produces a hypotonic condition in the phloem |
| Answer» Correct Answer - D | |
| 411. |
Mass flow hypothesis was given byA. Earnst tubesB. ThaineC. Mason and MaskellD. Mason |
| Answer» Correct Answer - A | |
| 412. |
What is osmotic pressure ? Why it is a colligative property ? |
| Answer» The osmotic presssure is equivalent to pressure required to stop the entry of water into the solution when it is separated from pure solvent by a semi-permeable membrane. | |
| 413. |
Plasmolysis is due toA. exosmosisB. endosmosisC. imbibitionD. facilitated diffusion |
| Answer» Correct Answer - A | |
| 414. |
We know that plants are harmed by excess water. But plants survive under flooded condition. How are they able to manage excess water ? |
| Answer» Plants can get rid of excess water by increasing the transpiration rate but upto a certain limit. Prolong water logged conditions for roots may lead to the death of the plant (as they can not respire). | |
| 415. |
Which is not directly connected with ascent fo sap?A. Cohesion theoryB. Root pressureC. Apopast-symplastD. Capillarity |
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Answer» Correct Answer - C Apoplast-symplast is not directly connected with ascent og sap. |
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| 416. |
Tracheide are less efficient than vessels due toA. Absence of closed end wallsB. Uneven thickeningsC. Casparian stripsD. Presence of tapering end walls |
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Answer» Correct Answer - D Tracheids are less efficient than vessels due to presence of tapering end walls. |
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| 417. |
Difference between osmotic pressure and turgor pressure isA. DPDB. Tranpiration pullC. Osmotic potentialD. Solute potential |
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Answer» Correct Answer - A Deffrence between osmotic pressure and turgor pressure is DPD (DPD=O.P-T.P.) |
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| 418. |
Element which is strutural component asd not remobilised is/areA. Potassium and phosphorusB. Nitrogen and sulphurC. CalciumD. Boht A and B |
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Answer» Correct Answer - C Elements which is structural components and not remobilised is calcium |
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| 419. |
Imbibition is always accompanied by swelling or increase in the volume of the imbibant . However , the increase in the volume of the imbibant isA. more than the volume of water imbibedB. same as the volume of the water imbibedC. less than the volume of the water imbibedD. it depends upon the type of imbibant |
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Answer» Correct Answer - C It is because of the close packing of water molecules in the interspaces and over the surface of the imbibant particles. |
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| 420. |
the form of sugar transported through phloem isA. glucoseB. fructoseC. surcroseD. ribose |
| Answer» Correct Answer - c | |
| 421. |
With the increase in temperature , the process of imbitionA. decreasesB. increasesC. remains the sameD. no effect |
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Answer» Correct Answer - B This is due to the fact that increased temperature raises the kinetic energy of the system and lower temperatures work in the opposite direction . |
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| 422. |
Which of the following factors is most important in regulation of transpirationA. Relative humidityB. TerperatureC. LightD. Wind. |
| Answer» Correct Answer - B | |
| 423. |
The factor, most important in regulating transpiration, isA. temeratureB. light and temperatureC. windD. relative humidity |
| Answer» Correct Answer - B | |
| 424. |
Movement by diffusion is _________ |
| Answer» Correct Answer - Passive process | |
| 425. |
Diffusion is a _________ process and is not dependent on _________A. Slow , gradient of concentrationB. Slow , living systemC. Rapid , temperatureD. Rapid , pressure |
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Answer» Correct Answer - B |
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| 426. |
The rate of diffusion is dependent upon the permeability of the medium , it however ,A. influences the final equilibrium of diffusion as it is never reached if the medium is denseB. does influnces the final equilibrium of diffusionC. does not influence the final equilibrium of diffusionD. None of the above |
| Answer» Correct Answer - C | |
| 427. |
Which is the most important factor in regulation of transpirationA. TemperatureB. HumidityC. LightD. Wind |
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Answer» Correct Answer - A Temperature determines RH , stomatal opening and vapour pressure deficit so it is most important factor . |
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| 428. |
The rate of diffusion is dependent upon the permeability of the medium , it however ,A. influences the final equilibrium of diffusion as it is never reached if the medium is denseB. does influence the final equilibrium of diffusionC. does not influence the final equilibrium of diffusionD. none of the above . |
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Answer» Correct Answer - C If the medium is more dense , the molecules , atoms, ions of solids , liquids of gases will take more time to get evenly distributed but equilibrium will positively be reached due to kinetic energy of diffusion particles. |
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| 429. |
the form of sugar transported through phloem isA. glucoseB. glucoseC. sucroseD. sucrose |
| Answer» Correct Answer - c | |
| 430. |
What will be the direction of movement of water, when a solution A having water potential of -9 bars and another solution B of -4 bars is separated by a semipermeable membraneA. B to AB. A to BC. Both directionsD. None of these |
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Answer» Correct Answer - A |
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| 431. |
A cell placed in 0.5 M sugar solution was found to be with no change in cell volume. If the same cell is placed in 0.5 M of sodium chloride solution , then there will beA. increase in cell volumeB. decrease in cell volumeC. no change in volumeD. bursting of the cell |
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Answer» Correct Answer - B OP =-nCRT. In NaCl , value of n=2 So, solution of 0.5 M NaCl will be hypertonic as compared to 0.5 M sugar solution . |
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| 432. |
Which of the following has the higher water potential ?A. 1M salt solutionB. 1 M sugar solutionC. Distilled waterD. All have equal water potential |
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Answer» Correct Answer - C NaCl is an electrolyte so number of ions increases in water and it leads to increase in osmotic pressure and hence decrease in water potential. |
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| 433. |
When osmotic pressure becomes equal to the wall pressure, thenA. flow of water will be inside the cellB. flow of water will be outside the cellC. there will be no net flow of waterD. none of the above . |
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Answer» Correct Answer - C Here DPD will be 0. |
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| 434. |
The equal of osmotic pressure becomes equal to diffusion pressuredeficit when a cell is placed in aA. hypertonic solutionB. hypotonic solutionC. isotonic solutionD. both (2) and (3) |
| Answer» Correct Answer - A | |
| 435. |
When osmotic pressure becomes equal to the wall pressure, thenA. The flow of water will be inside the cellB. The flow of water will be outside the cellC. Both flow will occur inside as well as outsideD. There will be no flow |
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Answer» Correct Answer - D |
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| 436. |
"There is no translocation at low temperature" has been invented byA. Swanson and WhitneB. FensonC. SpannerD. Munch |
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Answer» Correct Answer - A |
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| 437. |
Glucose is not stored in plant due toA. Decrease in osmotic pressureB. Increase in osmotic pressureC. Increase in turgor pressureD. Decrease in turgor pressure |
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Answer» Correct Answer - B |
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| 438. |
Who studied the effect of light on translocationA. De VriesB. BlackmanC. WilliamsD. Hart |
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Answer» Correct Answer - D |
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| 439. |
The scientist, who proposed that production of glycolic acid in guard cells is and important factor in stomatal opening, isA. KumarB. StewardC. ZelitchD. Lewitt |
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Answer» Correct Answer - C |
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| 440. |
Which one is correct ?A. `Psi_(m)=Psi_(p)+Psi_(s) +Psi_(w)`B. `Psi_(w)=Psi_(p)+Psi_(s)+Psi_(m)`C. `Psi_(p)=Psi_(w)+Psi_(m)+Psi_(s)`D. all are correct |
| Answer» Correct Answer - B | |
| 441. |
Plant cells do not burst in distilled water becauseA. cell wall is elastic , rigid and gets stretchedB. cell wall is livingC. cell wall is the outermost layer in plant cellD. cell wall is permeable |
| Answer» Correct Answer - A | |
| 442. |
Lenticular transpiration takes place inA. FruitsB. Woody stemsC. LeavesD. All the above |
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Answer» Correct Answer - B |
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| 443. |
In the mechanism of opening of stomata, the important factor isA. shape of the guard cellsB. chlorophyll contents of the cellC. hormone contents of the cellD. protein contents of the cell |
| Answer» Correct Answer - A | |
| 444. |
Which of the following wall of guard cells is thickA. OuterB. InnerC. Side wallD. All the above |
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Answer» Correct Answer - B |
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| 445. |
Plant cells submerged in distilled water will becomeA. TurgidB. FlaccidC. PlasmolysedD. Impermeable |
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Answer» Correct Answer - A |
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| 446. |
An important factor in stomata opening isA. hormone content of cellsB. protein content of cellsC. chlorophyll content of cellsD. shape of guard cells |
| Answer» Correct Answer - D | |
| 447. |
The principal pathway of water translocation in angiosperms isA. Sieve cellsB. Sieve tube elementsC. Xylem vesselD. Xylem and phloem |
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Answer» Correct Answer - C The principal pathway of water translocation is angiosperms is xylem vessel system |
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| 448. |
Which of the following wall of guard cells is thickA. LateralB. Inner (ventral concave )C. Outer ( dorsal convex )D. All of these |
| Answer» Correct Answer - B | |
| 449. |
What shall be the sequence of events during wilting of a plantA. Endosmosis `to` Plasmolysis ` to ` Temporary wilting `to` Permanent wiltingB. Exosmosis `to` Plasmolysis `to ` Temporary wilting `to` Permanent wiltingC. Exosmosis `to ` Imbibition `to` Plasmosolysis `to` Temporary wilting `to` Permanent wiltingD. Exosmosis `to` Plasmolysis `to` Deplasmolysis `to` Temporary wilting `to ` Permanent wilting |
| Answer» Correct Answer - B | |
| 450. |
Process of osmosis shall cease whenA. Solutions become isotonic or DPD becomes equalB. Water concentration becomes equalC. There is no lightD. The level of water falls |
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Answer» Correct Answer - A |
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