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.
| 1051. |
If two solutions have the same osmolarity, they are said to beA. HypertonicB. HypotonicC. IsotonicD. None of these |
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Answer» Correct Answer - C |
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| 1052. |
In trees, death of protoplasts is essential for a vital function such asA. Stomatal movementsB. Both water and food transportC. Water transportD. Food transport |
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Answer» Correct Answer - C |
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| 1053. |
By protoplasmic streaming theor, how sugar is translocated from one sleve tube to other.A. DiffusionB. OsmosisC. AbsroptionD. Active transport |
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Answer» Correct Answer - a |
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| 1054. |
Read the following statements and ifnd out the icorrect statement.A. The apoplast does not provide any barrier to water movement and water movement is thorugh mass flow.B. Symplastic movmentsis relatively slower.C. Cytoplasmic streaming is observed in cell of the Hydrilla leaf, the movement of chloroplast due to streaming is easily visibleD. The movment of water through the root layers is ultimately apoplastic in the endodermis. |
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Answer» Correct Answer - D The apoplast does not provide any barrie to water movement and water movement is through mass flow. Symplastic movement is relatively slower. Cytoplasmic streaming is observed in cells of the Hydrilla leaf, the movement of chloroplast due to streaming is easily visible. |
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| 1055. |
Which of the following is not a function of water in cellA. It provides energy for chemical reactionB. It acts as a solventC. It provides a medium for chemical reactionD. It releases hydrogen ions on ionisation |
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Answer» Correct Answer - A |
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| 1056. |
Cytoplamic streaming may aids inA. Symplastic movementB. Apoplastic movementC. Both A and BD. None of the above |
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Answer» Correct Answer - A Symplastic movement may be aided by cytoplasmic streaming |
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| 1057. |
Water will be absorbed by root hairs when the extemal medium isA. HypotonicB. HypertonicC. IsotonicD. Viscous |
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Answer» Correct Answer - A Water will be absorbed by root hairs when the external medium is hypotonic (high water potential) |
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| 1058. |
Water will be absorbed by root hairs whenA. Concentration of salt in the soil is highB. Concentration of solutes in the cell sap is highC. Plant is rapidly respiringD. They are separated from soil by a permeable membrane |
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Answer» Correct Answer - B |
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| 1059. |
Water is absorbed from outside solution only when it isA. IsotonicB. HypotonicC. HypertonicD. None of the above |
| Answer» Correct Answer - B | |
| 1060. |
Ions are absorbed from the soil byA. Passive transportB. Active transportC. Both (1) & (2)D. Imbibition |
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Answer» Correct Answer - C |
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| 1061. |
The water potential can be calculated byA. `pi + TP`B. `pi +WP`C. `Psi_(s)+Psi_(P)+Psi_(m)`D. `Psi+ WP` |
| Answer» Correct Answer - C | |
| 1062. |
Osmotic potential is alwaysA. positiveB. negativeC. neutralD. Both (a) and (b ) |
| Answer» Correct Answer - B | |
| 1063. |
The correct ascending squence with respect to their water potential is (a) `pi=-0.8 MPa, P=+0.4MPa` (b) `pi=-1.0 MPa, P=+0.5MPa` (c) `pi=-0.9 MPa, P=+0.2MPa` (d) `pi=-0.3 MPa, P=+0.2MPa`A. a, b, c, dB. c, b, a, dC. c, a, b, dD. c, d, b, a |
| Answer» Correct Answer - A | |
| 1064. |
Which of the following statement is correct concerning the flow of sap in xylem of trees ?A. In the morning, sap begins to flow first in twigs and later in trunkB. Flow is driven by high concentration of sugars in the vessel elementsC. Flow from the roots to the twigs would be accelerated if the leaves are removedD. Rapid flow of water puts the xylem under a pressure much greater than atmospheric pressure |
| Answer» Correct Answer - D | |
| 1065. |
In plants the negative potential in the water column in the xylem plays a major role in water transport up a stem . |
| Answer» Correct Answer - True | |
| 1066. |
Which of the following plays no role in the movement of water through the xylem of plants ?A. CapillarityB. Root pressureC. `H^(+)//ATP`ase pump at xylem membraneD. Transpiration pull |
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Answer» Correct Answer - C Xylem elements are dead cells thus, active transport via membrane do not take place in them. |
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| 1067. |
Root pressure, which plays a small role in xylem flow, is caused byA. transpiration of water out of the xylemB. cohesion of water out of the xylemC. adhesion of water molecules to wall to wall of the xylemD. high rate of water absorption |
| Answer» Correct Answer - D | |
| 1068. |
Cell turgidity is caused byA. EndosmosisB. ExosmosisC. PlasmolysisD. Diffusion |
| Answer» Correct Answer - A | |
| 1069. |
Root pressure may be caused byA. Osmotic flow of wate into xylem of absorbing part of rootB. Loss of water from xylem of plant due to transpirationC. Low water potential of leavesD. High water potential of leaves |
| Answer» Correct Answer - C | |
| 1070. |
At field capacity the soil containsA. Capillary and gavitational waterB. Capillary and runaway waterC. Capillary and hygroscopic waterD. Capillary, hygroscopic and bound water |
| Answer» Correct Answer - D | |
| 1071. |
The phenomenon which forces water upwards into tracheary elements of xylem in the root region isA. TranspirationB. Root pressureC. Turgor pressureD. Imbibition pressure |
| Answer» Correct Answer - B | |
| 1072. |
Which one of the following is not an antitranspirantA. PMAB. BAPC. Silicon oilD. Low viscosity |
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Answer» Correct Answer - B The rate of transpiration can be reduced by using anti-transpirants. These can be of two types (i) Metabolic inhibitors-PMA, ABA, aspirin. (ii) Film forming antitranspirant-Silicon, low viscosity, waxes. BAP (Benzyl Amino Purine) is a cytokinin. |
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| 1073. |
An antitranspirant isA. Phenyl mercuric acidB. Abscisic acidC. Salicylic acidD. All the above |
| Answer» Correct Answer - D | |
| 1074. |
Which is not antitranspirant?A. Low viscosity resinB. BAPC. Silicon oilD. PMA |
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Answer» Correct Answer - B B |
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| 1075. |
Which of the following is an antitranspirant ?A. SiliconB. Phenyl mercuric acetateC. ResinsD. All of these |
| Answer» Correct Answer - D | |
| 1076. |
In a flaccid cellA. DPD=OPB. DPD=TPC. TP=OPD. OP=O |
| Answer» Correct Answer - A | |
| 1077. |
Differntiate between the terms symprot antiport and uniport |
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Answer» When two different t ypes of molecules move across the membrane by faciltated diffusion in the same direction i.e either form foutside to inside or from inside to ouside of cell it es called symprt When they move in oppsoite direction it is called antiport whne a particular type of molecule moves across a membrane independent opf other molecule the diffucsion is called uniport |
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| 1078. |
Which of the following statement is correct regarding antiport system ?A. It allows diffusion of one moleculeB. It allows diffusion of two molecules in opposite directionC. It allows diffusion in one directionD. It allows diffusion of two molecules in single direction |
| Answer» Correct Answer - B | |
| 1079. |
The eight unit containing membrane protein that forms a water channel isA. porinB. `Na^(+)-H^(+)`C. aquaporinD. carrier protein |
| Answer» Correct Answer - C | |
| 1080. |
Amphistomatic leaf with stomata distributed equally on both the surface is an example ofA. isobilateral leafB. dorsiventral leafC. xerophytic leafD. hydrophytic leaf. |
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Answer» Correct Answer - A Leaf having stomata equally distributed on both surface is called amphistomatic (isobilateral) leaf,`e.g.,` most monocot leaves. |
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| 1081. |
A living continuum of cells connected by plasmodesmata isA. Dermal tissueB. Ground complexC. Donnan free spaceD. Symplast. |
| Answer» Correct Answer - D | |
| 1082. |
A bottle filled with previously moistened Mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomnon involvedA. DiffusionB. Imbibition sC. OsmosisD. D.P.D. |
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Answer» Correct Answer - B A bottle filled with previously moistened Mustard seeds and water was screw capped tighty and kept in a corner. It blows up suddenly after about half and hour. The phenomenon involved is imbibition. |
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| 1083. |
A bottle filled with previously moistened mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomenon involved isA. diffusionB. ImbibitionC. osmosisD. D.P.D |
| Answer» Correct Answer - B | |
| 1084. |
An innovative professor who wanted to gibe a live demonstratin of physiological process, filled a glass bottle with previously mointend mustard speed and water. He screqcapped the bottle and kept in away in a corner and resumed his lecture. Towards the end of his lecture there was a sudden explosion with glass pieces of bottle thtown around. Which of the following phenomena did the professor want to demonstrate ?A. DiffusionB. OsmosisC. Anaerobic respirationD. lmbibition |
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Answer» Correct Answer - D IF certain substances of examples seeds are dropped in water, within a few hour they absorbs the water and weell up considerably. These substances are called imbibants and the phonomenon is known as imbibition. The blast occurred due to increasing imbibitional pressure whose magnitude is extremely high. |
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| 1085. |
A bottle filled with previously moistened Mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomnon involvedA. DiffusionB. ImbibitionC. OsmosisD. D.P.D |
| Answer» Correct Answer - B | |
| 1086. |
A bottle filled with previously moistened Mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomnon involvedA. osmosisB. imbibitionC. diffusionD. plasmolysis |
| Answer» Correct Answer - B | |
| 1087. |
Physiological demonstration of osmosis is carried out byA. PotometerB. Bell jar experimentC. Thistle funnel whose mouth is tied with egg membraneD. Thistle funnel whose mouth is tied with paper . |
| Answer» Correct Answer - C | |
| 1088. |
Osmosis is not related to diffuion of watar fromA. One cell to anotherB. Soil to rootC. Xylem to XylemD. None of the above |
| Answer» Correct Answer - C | |
| 1089. |
Find the correct order for instrument used for measuring (i) Transpiration (ii) Size of stomata (iii) Atmospheric pressure (iv) OsmosisA. Potomter, manometer, porometer , osmometerB. Manometer, potometer,porometer, osmometerC. Porometer, manometer, potometer, osmometerD. Potometer, potometer,manometer,osmometer. |
| Answer» Correct Answer - D | |
| 1090. |
Osmotic pressure of pure water is |
| Answer» Correct Answer - D | |
| 1091. |
What is not significant is osmosisA. Gravitational PotentialB. Matric potentialC. Solute potentialD. pressure potential |
| Answer» Correct Answer - C | |
| 1092. |
Select the correct ones. a -Apoplastic movement of water occurs exclusively through cell wall. b-Solutes increase free enregy of water or water potential, c-Symplastic movement occurs through plasmodesmata d-Membrane permeability depends upon membrane coposition as well as chemical nature of soluteA. a and b onlyB. b and d onlyC. a,c and d onlyD. a, b and d only |
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Answer» Correct Answer - C Apoplastic movement of water occurs exclusively through cell wall Solutes decreases free energy of water or water potential Symplastic movement occurs through plasmodesmata Membrane permeability depends upon membrane composition as well as chemical nature of solute |
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| 1093. |
Consider the following statements and select the correct statement Statement a. Pure water has the maximum water potential Statement b. Osmotic potential is zero in pure waterA. Both statements are correct and b is not the reason for aB. Both the statements are wrongC. Both statements are correct and b is the reason for aD. Both statements are correct |
| Answer» Correct Answer - B | |
| 1094. |
A thin film of water, held by the soil particles under the influence of internal attractive force, is called which of the following waterA. CapillaryB. CombinedC. HygroscopicD. Gravitational |
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Answer» Correct Answer - c |
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| 1095. |
A thin film of water, held by the soil particles under the influence of internal attractive force, is called which of the following waterA. RanawayB. HygroscopicC. GravitationalD. Capillarity |
| Answer» Correct Answer - C | |
| 1096. |
osmotic pressure is responsible for the turgidity of plant cells. It plays important role inA. transportB. opening of stomataC. preventing wilting of leavesD. All of the above |
| Answer» Correct Answer - D | |
| 1097. |
Changes in turgidity of guard cells are controlled byA. PotassiumB. ChlorideC. Malic acidD. All the above |
| Answer» Correct Answer - D | |
| 1098. |
The selectively permeable membrane of the cell isA. PlasmalemmaB. CytoplasmC. Cell wallD. None of the above |
| Answer» Correct Answer - A | |
| 1099. |
The plasmolysed cells regain turgidity and assume original volume under influence of hypotonic solution. The prosses is calledA. plasmolysisB. DeplasmoysisC. EndosmosisD. Exosmosis |
| Answer» Correct Answer - B | |
| 1100. |
In mycorrhiza , fungal filaments help inA. Water absorptionB. Food translocationC. Developing tension is xylemD. Development of roots pressure |
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Answer» Correct Answer - A |
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