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.
| 51. |
Abscisic acid causesA. Stomatal closureB. Stem elongationC. Leaf expansionD. Root elongation. |
| Answer» Correct Answer - A | |
| 52. |
Auxin causes cells to absorb water from hypertonic medium becauseA. It lower transpiration rateB. It raises rate of cellular respiration for Providing ATP for active water absorptionC. It increases solute potential of cellsD. It increases rate of transpiration |
| Answer» Correct Answer - B | |
| 53. |
Abscisic acid causesA. Seed dormancyB. Apical dominanceC. Root initiationD. Phototropism. |
| Answer» Correct Answer - A | |
| 54. |
Light inhibits seed germination ofA. LactucaB. CapsellaC. AlliumD. Tobacco |
| Answer» Correct Answer - C | |
| 55. |
`2:4`-D causesA. Delay in senescenceB. BoltingC. Increase in branchesD. Increased growth of all parts. |
| Answer» Correct Answer - D | |
| 56. |
Growing trees and shrubs in small pots isA. BonsaiB. CultureC. Green gardeningD. Tree culture. |
| Answer» Correct Answer - A | |
| 57. |
Lateral axillary buds are not allowed to grow byA. AuxinB. EthyleneC. GibberellinD. Cytokinin. |
| Answer» Correct Answer - A | |
| 58. |
Which is not a natural plany hormone ?A. `GA_(3)`B. `GA_(2)`C. IAAD. 2, 4-D |
| Answer» Correct Answer - D | |
| 59. |
Apples growing on tree can have larger than normal size byA. Thinning of blossomsB. DefoliationC. Decapitation of stem apexD. Applying of hormones. |
| Answer» Correct Answer - D | |
| 60. |
Cytokinins are generallyA. GlucosidesB. AminopurinesC. AcidicD. Phenolic. |
| Answer» Correct Answer - B | |
| 61. |
Apples are generally wrapped in waxed paper toA. Prevent sunlight from changing its colourB. Prevent aerobic respiration by checking the entry of oxygenC. Prevent ethylene formation that hastens ripeningD. Make the apples look costly. |
| Answer» Correct Answer - C | |
| 62. |
Cytokinins are generallyA. AcidsB. AminopurinesC. PhenolsD. Glucosides. |
| Answer» Correct Answer - B | |
| 63. |
Secondary roots are generallyA. DiageotropicB. Positively geotropicC. AgeotropicD. Plagio-geotropic. |
| Answer» Correct Answer - D | |
| 64. |
Circinate ptyxis present in fern leaves is due toA. EpinastyB. HyponastyC. NutationD. Movement of variation |
| Answer» Correct Answer - B | |
| 65. |
Match the items of column I and column II `{:("Column I","Column II"),("a Auxin","p GA"_(3)),("b Cytokinin","r Abscisic Acid"),("c Cytokinin","r Abscisic Acid"),("d Dromin","s Acetic acid"),(,"t Zeatin"):}`A. a - q, b - r, c - p, d - tB. a - q, b - s, c - p, d - tC. a - q, b - p, c - t, d - tD. a - q, b - t, c - q, d - r. |
| Answer» Correct Answer - C | |
| 66. |
Which method makes the seed coat permeable and allows growth of embryo ?A. ScarificationB. StratificationC. VernalisationD. Denudation. |
| Answer» Correct Answer - A | |
| 67. |
Pneumatophores showA. Positively geotropismB. Negative geotropism (ageotropism)C. ThigmotropismD. Negative photoropism. |
| Answer» Correct Answer - B | |
| 68. |
Thigmotropism is best exhibited byA. LaminaB. TendrilsC. Root apexD. Tendrils |
| Answer» Correct Answer - B | |
| 69. |
Skototropic movements are induced byA. NightB. LightC. TouchD. Heat. |
| Answer» Correct Answer - A | |
| 70. |
Light effective in producing photoropism isA. GreenB. RedC. YellowD. Blue |
| Answer» Correct Answer - D | |
| 71. |
Movements caused by internal factors areA. ParatonicB. IntrinsicC. AutonomicD. Rheotropism. |
| Answer» Correct Answer - C | |
| 72. |
Seeds of some plants do not germinate even under favourable conditions due toA. DormancyB. QuiescenceC. ViviparyD. Non-viability. |
| Answer» Correct Answer - A | |
| 73. |
Seeds of winter varieties are benefitted by techniqueA. SenescenceB. PhotoperiodismC. VernalisationD. Abscission. |
| Answer» Correct Answer - C | |
| 74. |
Percolation of soil water to water table occurs throughA. Micropores less than `0.2mum`B. Micropores between 0.2 to 20.0 `mum`C. Macropores between 20-50`mum`.D. Macropores bigger than 50 `mum`. |
| Answer» Correct Answer - D | |
| 75. |
Maximum solute pressure occurs in a cell withA. Maximum sizeB. PlasmolysisC. Full turgidityD. Little or no vacuola |
| Answer» Correct Answer - B | |
| 76. |
Chresard occurs in the soilA. Around soil particlesB. Inside microporesC. Inside macroporesD. In percolation chambers. |
| Answer» Correct Answer - B | |
| 77. |
Given graph is drawn on the parameters of growth versus time. Here A,B and C respetively represent A. Exponential phase, lag phase and steady state phaseB. Steady state phase, lag phase and log phaseC. Slow growing phase, lag phase, steady state phaseD. Log phase lag phase and steady state phase. |
| Answer» Correct Answer - B | |
| 78. |
Cells attaining their maximum size in terms of wall thickening and protoplasmic modifications belong toA. Meristematic phaseB. Elongation phaseC. Maturation phaseD. None of the above. |
| Answer» Correct Answer - C | |
| 79. |
IAA precursor isA. TryptophanB. LeucineC. TyrosineD. Phenylalanine. |
| Answer» Correct Answer - A | |
| 80. |
IAA was first isolated fromA. Corn germ oilB. GibberellaC. Human urineD. Rhizopus. |
| Answer» Correct Answer - C | |
| 81. |
Which one is derivative of a carotenoidA. IAAB. ABAC. IBAD. GA. |
| Answer» Correct Answer - B | |
| 82. |
Vernalisation simulates flowering inA. GingerB. TurmericC. ZamikandD. Carrot. |
| Answer» Correct Answer - D | |
| 83. |
The period of suspended growth due to exogenous condition is termed asA. QuiescenceB. DormancyC. PerennationD. Hibernation |
| Answer» Correct Answer - A | |
| 84. |
Length of stalks of grape fruits increases due toA. AuxinB. CytokininsC. EthyleneD. Gibberellin. |
| Answer» Correct Answer - D | |
| 85. |
Gibberellins were first extracted fromA. Coleoptile tipB. Root tipC. FungusD. Bacterium. |
| Answer» Correct Answer - C | |
| 86. |
The terms 'vernalisation' was coined byA. Garner and AllardB. DarwinC. GeofferyD. Lysenko. |
| Answer» Correct Answer - D | |
| 87. |
Bakanae disease is carused byA. FungusB. AlgaC. BacteriumD. Virus. |
| Answer» Correct Answer - A | |
| 88. |
Xylem walls are`A. Positively chargedB. Negatively chargedC. Electrochemically neutralD. Differentially permeable. |
| Answer» Correct Answer - B | |
| 89. |
The molecular weight of chlorophyll a isA. 907B. 893C. 911D. 712 |
| Answer» Correct Answer - B | |
| 90. |
Which one is bacteriochlorophyll aA. `C_(55)H_(74)O_(6)N_(4)Mg`B. `C_(5)H_(70)O_(6)N_(4)Mg`C. `C_(55)H_(72)O_(5)N_(4)Mg`D. `C_(35)H_(32)O_(5)N_(4)Mg`. |
| Answer» Correct Answer - A | |
| 91. |
The name zeatin was coined byA. SkoogB. MillerC. LethamD. Melvin. |
| Answer» Correct Answer - C | |
| 92. |
What is the role of auxin ?A. Prevents abscission of leaves and fruitsB. Promotes abscission of leaves and fruitsC. Promotes stomatal closureD. Promotes dormancy. |
| Answer» Correct Answer - A | |
| 93. |
Herbicides kill plants by inhibitingA. PS IB. PS IIC. TranslocationD. Both A and B. |
| Answer» Correct Answer - B | |
| 94. |
In bryophytes and algae, lunaric acid replacesA. AuxinB. GibberellinC. CytokininD. Abscisic acid. |
| Answer» Correct Answer - D | |
| 95. |
CytokininsA. Cause leaf abscissionB. Delay leaf abscissionC. Promote stomatal closingD. Promote seed dormancy. |
| Answer» Correct Answer - B | |
| 96. |
Synthetic auxins are employed forA. Ripening of fruitsB. Increasing size of fruitsC. Killing weedsD. Preventing elongation of internodes |
| Answer» Correct Answer - C | |
| 97. |
the term "photoperiodism" was proposed by or the phenomenon of photoperiodism in plants was discovered byA. DarwinB. LysenkoC. ArnonD. Garner and Allard. |
| Answer» Correct Answer - D | |
| 98. |
Seasonality of plants is due toA. PhototropismB. PhotosynthesisC. PhotoperiodismD. Photolysis |
| Answer» Correct Answer - C | |
| 99. |
In which plant heterophyllous development occurs due to environmentA. CorianderB. CottonC. LarkspurD. Buttercup |
| Answer» Correct Answer - D | |
| 100. |
Which statement regarding growth is falseA. Increase in mass and increase in number of individuals are twin characteristics of growthB. In plants, growth by cell division is seen only upto a certain stageC. Growth exhibited by nonliving objects is by accumulation of material on the surfaceD. A multicellular organism grows by cell division |
| Answer» Correct Answer - B | |