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.
| 701. |
Which one of the following elements is necessary for the translocation of the sugars in plantsA. IronB. ManganeseC. MolybdenumD. Boron |
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Answer» Correct Answer - d |
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| 702. |
Translocation of sugars in flowering plants occurs in the form ofA. glucoseB. fructoseC. sucroseD. lactose |
| Answer» Correct Answer - C | |
| 703. |
Find odd one w.r.t chief sink for mineral elementsA. Apical and lateral meristemB. Young leavesC. Fruits and seedsD. Mature leaves |
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Answer» Correct Answer - D |
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| 704. |
A semipermeable membrane allows the diffusion ofA. SolutesB. SolventC. Both solvent and solutesD. None of the above |
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Answer» Correct Answer - B A semipermeable memebrabrane allows the diffusion of solvent only. |
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| 705. |
Which is possible for a fully turgid cell ?A. DPD= 10 atm, OP =15 atm, TP=5atmB. DPD= 0.2 atm , OP =0.7 atm, TP=0.5 atmC. DPD =0.0atm , OP =15atm , TP= 15 atmD. DPD=5atm , OP=12 atm , TP=7 atm |
| Answer» Correct Answer - C | |
| 706. |
The plants that send their roots upto fringe of the water table due to the deficiency of air are calledA. hyrophytesB. phreatophytesC. mesophytesD. halophytes |
| Answer» Correct Answer - B | |
| 707. |
From acitve hydathodes, the water comes out byA. Osmotic pressureB. Secreted by force developed within cells themselvesC. By root pressureD. None of the above |
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Answer» Correct Answer - C |
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| 708. |
Number of stomata present per `cm^(2)` of a common leaf is abooutA. Less then 100B. More than 100,000C. 1 millionD. 10000 |
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Answer» Correct Answer - D For common crop plants the number of stomata is about ten `thousand//cm^(2)` area of leaf. |
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| 709. |
Select the correct statement for diagram below A. Cell "A" will gain `H_(2)O`, Cell "B" will lose `H_(2)O`, Cell "C" neither gain nor loses `H_(2)O`B. Cell "A" will gain `H_(2)O`, Cell "B" neither gain nor loses `H_(2)O`, Cell "C" will lose `H_(2)O`C. Cell "A" neither gain nor loses `H_(2)O`, Cell "B" will gain `H_(2)O`, Cell "C" will loses `H_(2)O`D. Cell "A" will lose `H_(2)O`, Cell "B" will gain `H_(2)O`, Cell "C" neither gain nor loses `H_(2)O` |
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Answer» Correct Answer - A |
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| 710. |
The loss of water through cuticle reaches uptoA. `5%`B. `10%`C. `20%`D. `40%` |
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Answer» Correct Answer - D Normally 3 - 10% but in herbaceous measophytes it can be upto 50%. |
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| 711. |
At constant temperature, the rate of tranpiration will be higher atA. Sea levelB. 1 km below sea levelC. 1 km above sea levalD. 1.5 km above sea level |
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Answer» Correct Answer - D Height above sea level lowers atmopheric pressure and increases evaporation. |
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| 712. |
The osmotic pressure of pure and clean water is |
| Answer» Correct Answer - A | |
| 713. |
Which of the following is not a controlled processA. TranspirationB. GuttationC. Both (a) and (b)D. None of the above |
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Answer» Correct Answer - B |
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| 714. |
During absorption of water by roots , the water potential of cell sap is lower than that ofA. pure water and soil solution .B. neither pure water nor soil solution .C. pure water but higher than that of soil solution .D. Soil solution but higher than that of pure water |
| Answer» Correct Answer - A | |
| 715. |
In a plant cell, O.P. is equal toA. T.P.-D.P.D.B. D.P.D.-T.PC. T.P.-D.P.D. D.P.D.+T.P. |
| Answer» Correct Answer - D | |
| 716. |
During absorption of water by roots , the water potential of cell sap is lower than that ofA. Pure water and soil solurtionB. Neither pure water nor soil solutionC. Pure water but higher than that of soil solutionD. Soil solution but highter than that of pure water |
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Answer» Correct Answer - A Water potential has a negative value where lower value means more negative . |
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| 717. |
Guttation usually occurs when the plant it putA. In more saturated atmosphereB. In more humid soilC. In dry conditionD. In deserts |
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Answer» Correct Answer - A |
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| 718. |
Which of the following statement is not true for stomatal apparatusA. Guard cells invariably posses chloroplasts and mitochondriaB. Guard cells are always surrounded by subsidiary cellsC. Stomata are involved in gaseous exchangeD. Inner walls of guard cells are thick |
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Answer» Correct Answer - B |
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| 719. |
Osmotic pressure is a vacuolated plant cell isA. Equal to W.P.B. Equal to T.P.C. More than D.P.D.D. Less then D.P.D. |
| Answer» Correct Answer - C | |
| 720. |
During absorption of `H_(2)O` by roots, the `H_(2)O` potential of cell sap is lower than that ofA. Solution outsideB. That of pure `H_(2)O`C. OneD. None of these |
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Answer» Correct Answer - b |
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| 721. |
See the following figure and point out the statement which is not correct A. The direction and the rate of osmosis depend upon both the pressure gradient and conc. GradientB. Pressure of a SPM is a prerequisite for this process to occurC. Movement of solute will take place from chamber A to BD. Movement of solvent molecules will take place from chamber A to B |
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Answer» Correct Answer - C |
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| 722. |
See the following diagram, when the TP of the cell B increases to 18. What changes would be occur with regard to water movement A. No movement of water will occurredB. B actively absorb water from neighbor cellC. Water diffuses into B from outer cellD. Cells A, C, D and E absorb water from B |
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Answer» Correct Answer - D |
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| 723. |
Out of the following, which one is the most common type of transpirationA. FoliarB. StomatalC. LenticularD. Cuticular |
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Answer» Correct Answer - B |
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| 724. |
Water potential in equal toA. `Psi_(s)+ "O.P."`B. `Psi_(s)= "T.P."`C. `Psi_(p)+ "psi"_(omega)`D. `Psi_(s)+ Psi_(p).` |
| Answer» Correct Answer - D | |
| 725. |
See the following figure and select the correct option A. Water potential has nothing to do with K.E. of water in a solutionB. K.E. of water in A solution =K.E. of `H_(2)O` in B solutionC. K.E. of water in B solution `gt` K.E. of water in A solutionD. Kinetic energy (K.E.) of `H_(2)O` in A solution `gt` K.E. of water in B solution |
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Answer» Correct Answer - d |
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| 726. |
Water passes into a cell or one cell to another due toA. O.P.B. D.P.D.C. W.P.D. Diffusion. |
| Answer» Correct Answer - B | |
| 727. |
Which of the following is not the type of transpirationA. Stomatal transpirationB. Cuticular transpirationC. Lenticular transpirationD. Endodermal transpiration |
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Answer» Correct Answer - D |
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| 728. |
Which of the following shows guttation ?A. Pisum sativumB. Ficus bengalensisC. Acacia niloticaD. Tropaeolum |
| Answer» Correct Answer - D | |
| 729. |
Osmoscope is used forA. Measuring OPB. Measuring TPC. measuring psiD. Demonstration of osmosis |
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Answer» Correct Answer - D |
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| 730. |
Water passes into a cell due toA. OpB. DPDC. turgor pressureD. diffusion. |
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Answer» Correct Answer - B Cell gain or lose water among themselves on the basis of their water potential or DPD and not their solute or osmotic potentials only. Movement of water (solvent) takes place from lower DPD to high DPD or from higher water potential to lower water potential. |
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| 731. |
When a cell is fully turgid, which of the following will be zero The potential energy of water is referred to asA. Wall pressureB. Osmotic pressureC. Turgor pressureD. Water pressure |
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Answer» Correct Answer - D |
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| 732. |
Which out of the four plant cells `(P,Q,R "and" S)` would not exhibit any wall pressure? A. R and SB. P and RC. Q and SD. P and Q |
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Answer» Correct Answer - b |
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| 733. |
Plants exhibit subepidermal evaporation of water duringA. PhotosynthesisB. GuttationC. TranspirationD. Respiration |
| Answer» Correct Answer - C | |
| 734. |
When a call is fully turgid, which of the following will be zeroA. Turgor pressure/pressure potentialB. Wall pressureC. Suction pressue/DPD/water potentialD. Osmotic pressure (solute pressure ) |
| Answer» Correct Answer - C | |
| 735. |
Which out of the four plant cells `(P,Q,R "and" S)` would not exhibit any wall pressure? A. `P`and `Q`B. `Q`and `S`C. `P`and`R`D. `R` and `S` |
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Answer» Correct Answer - C Wall pressure is equal and opposite pressure of the cell wall against the cell content to the turgor pressure. In the given figure. Cell walls of cells Q and S generate resistance against the expanding protoplasm as they are shown to be fully trugid cells. But cells P and R are shown to be in the stage of plasmolysis, hence these cells would not exhibit any wall pressure. |
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| 736. |
In a fully turgid cell, ____ is zero.A. OPB. TPC. WPD. DPD |
| Answer» Correct Answer - D | |
| 737. |
In submerged hydrophytes, the absorption of water takes place thrughA. rootB. stemC. leafD. general surface of plant. |
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Answer» Correct Answer - D Roots are poorly developed in hydrophytes and the water absorption takes place through general surface of the plant body. |
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| 738. |
The given figure shows three different types of pathways of intercellular movement of water in plants indentify `A,B` and `C` and select the correct option. A. `{:(" A"," B"," C"),("Apoplast","Symplast","Vacuolar"):}`B. `{:(" A"," B"," C"),("Symplast","Apoplast","Vacuolar"):}`C. `{:(" A"," B"," C"),("Symplast","Vaculor","Apoplast"):}`D. `{:(" A"," B"," C"),("Apoplast","Vaculor","Symplast"):}` |
| Answer» Correct Answer - A | |
| 739. |
In a fully turgid cellA. `Psi_(w)=Psi_(s)+Psi_(rho)`B. `Psi_(w)=` zeroC. `Psi_(w)=-Psi_(s)-Psi_(rho)`D. `Psi_(w)=Psi_(s)=Psi_(rho)` |
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Answer» Correct Answer - B In case of fully turgid cell, the net movement of water into the cells is stopped. the cell is in equilibrium with the water outside. the water potential in such a case will be zero (0). A cell at full turgor its osmotic potential and pressure potential equal but opposite in sign. Therefore, its water potential will be zero. For example a cell has its `psi_(s)` of - 10 bars and `psi_(p)` fo 10 bar, the resultant water potential will be zero as follows: `psi_(w) = psi_(s) + psi_(p)` `psi_(w) = - `10 bars + 10 bars `psi_(w) = 0` bars |
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| 740. |
Most water absorption in plants takes place throughA. Root capB. Root apexC. Root hair zoneD. Meristematic zone |
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Answer» Correct Answer - C |
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| 741. |
The most important factor for absorption of water in plants isA. living cellB. force of capillarityC. imbibitionD. cohesive force of water |
| Answer» Correct Answer - A | |
| 742. |
The osmotic pressure of cell sap is ___ than/to that of soil water.A. lowerB. equalC. higherD. Both (a) and (b) |
| Answer» Correct Answer - C | |
| 743. |
What is the direction of water movement between two adjoining cells A and B if (A) `Psi_(S)=-20` bars , `Psi_(P)=`10 bars (B) `Psi_(S)=-24` bars , `Psi)_(P)=12` bars |
| Answer» `Psi_(W)` of cell A and B are -10 and -12 bars, respectively . So, direction of water movement is from A to B (i.e from high `Psi_(W)` to low `Psi_(W)`) | |
| 744. |
Bulk of water requirement of plant is met through the process ofA. active absorptionB. passive absorptionC. root pressureD. imbibition |
| Answer» Correct Answer - B | |
| 745. |
When concentration of solutsion is low in the soli, absorption of water isA. StoppedB. IncreasedC. RetardedD. Normal |
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Answer» Correct Answer - B when concentration of solution is low in the soil , absorption of water is increased because water potential of soil increases |
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| 746. |
The water available to the plant for absorption isA. HolardB. ChresardC. EchardD. Ground water |
| Answer» Correct Answer - B | |
| 747. |
A : There is indirect relationship between rate of respiration and water absorption R : Increased metabolism increases mineral uptake .A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)C. Assertion is true statement but Reason is false, then mark (3)D. If both Assertion and Reason are false statements , then mark (4) |
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Answer» Correct Answer - A |
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| 748. |
In soli, the water available for root absorptionA. Gravtiational waterB. Capillary waterC. Hygroscopic waterD. Combined water |
| Answer» Correct Answer - B | |
| 749. |
Rate of Water absorption can be increased throughA. Decreased transpirationB. Decreased ion absorptiionC. Increased photosyntesisD. Increased transpiration |
| Answer» Correct Answer - D | |
| 750. |
Water in plants is transported by or ascent of sap take place throughA. CambiumB. PholemC. XylemD. Epidermis |
| Answer» Correct Answer - C | |