McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: All India Pre Medical Test (AIPMT) .
Chapters
| 51. |
Which apparatus is used for exact measuring of growth of plants in longitudinal axis ? |
| A. | Measuring scale |
| B. | Auxanometer |
| C. | Manometer |
| D. | Sphigomanometer |
| Answer» A. Measuring scale | |
| 52. |
Growth regulators are chemically ........ |
| A. | Organic chemical |
| B. | Inorganic chemicals |
| C. | Minerals |
| D. | Vitamins |
| Answer» A. Organic chemical | |
| 53. |
From where auxin was isolated for the first time ? |
| A. | Coleoptile of oat |
| B. | Sperm cell of herring fish |
| C. | Paddy plant |
| D. | Human urine |
| Answer» D. Human urine | |
| 54. |
Which of the following should be used for the control of weeds in farms ? |
| A. | Cytokinin |
| B. | Auxin |
| C. | Gibberrelin |
| D. | Ethylene |
| Answer» B. Auxin | |
| 55. |
Which chemical induces formation of adventitious roots ? |
| A. | Gibberrelin |
| B. | IAA |
| C. | Abscisic acid |
| D. | Cytokinins |
| Answer» B. IAA | |
| 56. |
Which is incorrect for the effects of auxin ? |
| A. | Induces +ve phototropism |
| B. | Induces growth and length in stem |
| C. | Shows apical dominance |
| D. | Induces -ve phototropism in roots |
| Answer» B. Induces growth and length in stem | |
| 57. |
Which of the following organic substance is growth inhibitor ? |
| A. | IBA |
| B. | ABA |
| C. | IAA |
| D. | GA |
| Answer» B. ABA | |
| 58. |
From where indole acetic acid an organic substance was isolated for the first time ? |
| A. | Animal fat |
| B. | Gibberrela |
| C. | Human urine |
| D. | Fish |
| Answer» C. Human urine | |
| 59. |
Cytokinin is formed in which of the following region ? |
| A. | Region of cell elongation |
| B. | Regions of senescence |
| C. | Regions of cell division |
| D. | Regions of abscission |
| Answer» C. Regions of cell division | |
| 60. |
Which hormone reduces the dominance of apical bud ? |
| A. | Auxin |
| B. | ABA |
| C. | Ethylene |
| D. | Cytokinin |
| Answer» C. Ethylene | |
| 61. |
Which is incorrect option for cytokinin ? |
| A. | Retards senescence |
| B. | Secreted in the region of active cell division |
| C. | Increases dominance of apical bud |
| D. | Stimulates cell division |
| Answer» C. Increases dominance of apical bud | |
| 62. |
Drooping of fruit, after fruit maturation (ripening) shows ........ . |
| A. | Increase in amount of auxin |
| B. | Decreases in amount of auxin |
| C. | Reduces in amount of ABA |
| D. | Increase gibberrelic acid |
| Answer» B. Decreases in amount of auxin | |
| 63. |
Which of the following is mismatched statement for effect of auxin ? |
| A. | It inhibits lateral growth |
| B. | It induces stem elongation in plant |
| C. | It induces cell division |
| D. | It helps in further elongation of some regions |
| Answer» D. It helps in further elongation of some regions | |
| 64. |
Which hormore is essential for initial growth of root ? |
| A. | IBA |
| B. | GA |
| C. | ABA |
| D. | Kinetin |
| Answer» A. IBA | |
| 65. |
Which is the specific use of synthetic auxin in higher concentration ? |
| A. | Weedicide |
| B. | Inhibits growth of lateral buds |
| C. | Inhibits initial process of root formation |
| D. | Regulates cell elongation |
| Answer» A. Weedicide | |
| 66. |
Which of the following organic chemical is synthetic ? |
| A. | 2-4-D |
| B. | IAA |
| C. | GA |
| D. | IBA |
| Answer» A. 2-4-D | |
| 67. |
Which is required to inhibit germination of food storing part of potato ? |
| A. | ABA |
| B. | IAA |
| C. | IBA |
| D. | GA |
| Answer» A. ABA | |
| 68. |
This hormone induces growth of root but inhibits growth of ....... |
| A. | Apical bud |
| B. | Unfertilized fruit developement |
| C. | Lateral buds |
| D. | Root |
| Answer» C. Lateral buds | |
| 69. |
What is indicated by any of the developing plant if it increase / hyperactivity in lateral buds ? |
| A. | It obtains more light |
| B. | Cytokinin decreases |
| C. | It stores more food |
| D. | Auxin decreases |
| Answer» D. Auxin decreases | |
| 70. |
From where gibberrelin was isolated for the first time ? |
| A. | Penicillium |
| B. | Asparagus |
| C. | Mucor |
| D. | Gibberella |
| Answer» D. Gibberella | |
| 71. |
Which of the following effect of gibberrelin is observed in plant ? |
| A. | Long plant shorten |
| B. | Dwarf plant grows in longitudinal axis |
| C. | Induces formation of root system |
| D. | Yellowing of young leaves |
| Answer» B. Dwarf plant grows in longitudinal axis | |
| 72. |
Which of the following hormone is responsible for cell division ? |
| A. | GA |
| B. | IAA |
| C. | Cytokinin |
| D. | Abscisic acid |
| Answer» C. Cytokinin | |
| 73. |
Garland of green leaves remain green, by treatment of which organic chemical ? |
| A. | Cytokinin |
| B. | Auxin |
| C. | Ethylene |
| D. | Gibberrelin |
| Answer» A. Cytokinin | |
| 74. |
Which hormone inhibits senescence of vegetative parts and plants ? |
| A. | Auxin |
| B. | Cytokinin |
| C. | Gibberrelin |
| D. | Abscisic acid |
| Answer» B. Cytokinin | |
| 75. |
Which is natural growth inhibitor or senescence inducing hormone ? |
| A. | IAA |
| B. | ABA |
| C. | NAA |
| D. | GA |
| Answer» B. ABA | |
| 76. |
Which hormone affects the growth of plant in adverse climatic / environmental condition ? |
| A. | Abscisic acid |
| B. | Ethylene |
| C. | NAA |
| D. | 2-4, D |
| Answer» A. Abscisic acid | |
| 77. |
Which of the following phenomenon is regulated by abscisic acid ? |
| A. | Shoot elongation |
| B. | Origin of cell wall and cell elongation |
| C. | Opening and closing of stomata |
| D. | Abscission of leaf and dormancy |
| Answer» C. Opening and closing of stomata | |
| 78. |
Which hormone inhibits formation of new cells ? |
| A. | Abscisic acid |
| B. | Kinetin |
| C. | Gibberrelic acid |
| D. | Indol-butaric acid |
| Answer» A. Abscisic acid | |
| 79. |
Which of the following is responsible for seed dormancy ? |
| A. | Abscissic acid |
| B. | Ethylene |
| C. | Gibberrelin |
| D. | Auxin |
| Answer» A. Abscissic acid | |
| 80. |
Name the hormone responsible for activity of chlorophyll in leaves. |
| A. | Cytokinin |
| B. | Ethylene |
| C. | Gibberrelin |
| D. | ABA |
| Answer» A. Cytokinin | |
| 81. |
Which of the following is simple, volatile hormone ? |
| A. | Ethylene |
| B. | ABA |
| C. | IAA |
| D. | Cytokinin |
| Answer» A. Ethylene | |
| 82. |
Which of the following statement about ABA is inappropriate ? |
| A. | Induces ripening of fruit |
| B. | Inhibits seed germination |
| C. | Induces dormancy of bud |
| D. | Closes stomata |
| Answer» A. Induces ripening of fruit | |
| 83. |
Which hormone is absent in dormnant seed ? |
| A. | ABA |
| B. | Auxin |
| C. | GA |
| D. | Ethylene |
| Answer» C. GA | |
| 84. |
Which of the following statement is true for abscisic acid ? |
| A. | Inhibits transcription of gene |
| B. | Opens stomata |
| C. | Reduces senescence |
| D. | Acts as weedicide |
| Answer» A. Inhibits transcription of gene | |
| 85. |
By which physiological process water enters into seed coats of seed ? |
| A. | Endosmosi |
| B. | Diffusion |
| C. | Plasmolysis |
| D. | Imbibition |
| Answer» D. Imbibition | |
| 86. |
What is called the effect of daylight on plant ? |
| A. | Phototropic |
| B. | Photoperiodism |
| C. | Photooxidatio |
| D. | Photonastism |
| Answer» B. Photoperiodism | |
| 87. |
Which of the following is correct option for seed germination ? |
| A. | Emergance of radicle from primary root |
| B. | Emergance of primary root forms from radicle |
| C. | Development of primary root |
| D. | No root formation |
| Answer» B. Emergance of primary root forms from radicle | |
| 88. |
What is the rate of respiration during seed germination ? |
| A. | Slow |
| B. | Steady |
| C. | Rapid |
| D. | Zero |
| Answer» C. Rapid | |
| 89. |
Which of the following group show viviparous germination ? |
| A. | Rhizophora and Avicinnia |
| B. | Orchid and Rhizophora |
| C. | Maize and Bean |
| D. | Soyabean and Xanthium |
| Answer» A. Rhizophora and Avicinnia | |
| 90. |
Which of the following is found in high concentration in healthy leaf ? |
| A. | Cytokinin |
| B. | Gibberrelin |
| C. | Auxin |
| D. | Ethylene |
| Answer» C. Auxin | |
| 91. |
From the given below which is short-day plant ? |
| A. | Paddy |
| B. | Wheat |
| C. | Oat |
| D. | Opium |
| Answer» A. Paddy | |
| 92. |
Which of the following is long-day plant ? |
| A. | Oat |
| B. | Soyabean |
| C. | Vinca |
| D. | Paddy |
| Answer» A. Oat | |
| 93. |
Vernalization means.............. |
| A. | Growth Graph |
| B. | Flowering at high temperature |
| C. | Effect of light on growth |
| D. | Speedy flowering at low temperature |
| Answer» D. Speedy flowering at low temperature | |
| 94. |
Flowering due to low temperature is ......... |
| A. | Thermonasty |
| B. | Vernalization |
| C. | Nutation |
| D. | Photonasty |
| Answer» B. Vernalization | |
| 95. |
If temporary light is made available for dark phase of long day plant, what is observed ? |
| A. | Flowering will not occur |
| B. | Increase in flowering |
| C. | Decreasing in flowering |
| D. | No change |
| Answer» A. Flowering will not occur | |
| 96. |
Which is an essential temperature for more production of wheat by noting effect of low temperature ? |
| A. | °1to 20 C |
| B. | °28to30 C |
| C. | °1to10 C |
| D. | °25to30 C |
| Answer» C. °1to10 C | |
| 97. |
By which condition flowering take place in short day plant ? |
| A. | Short day and long night |
| B. | Short day and short night |
| C. | Short night |
| D. | Long day and short night |
| Answer» A. Short day and long night | |
| 98. |
Which type of light is required in long day plants for flowering ? |
| A. | Red light |
| B. | More light than alloted period |
| C. | Less light than alloted time period |
| D. | All of the given |
| Answer» B. More light than alloted period | |
| 99. |
Where is phytochrome pigment present ? |
| A. | Fungi |
| B. | Algae |
| C. | Bryophyta |
| D. | Phanerogams |
| Answer» D. Phanerogams | |
| 100. |
Which physilogical reaction is essential for development leaftendril ? |
| A. | Curvature |
| B. | Nastism |
| C. | Circumnutation |
| D. | Tropism |
| Answer» C. Circumnutation | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.