MCQOPTIONS
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MCQOPTIONS
This section includes 269 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Auxin suppresses the growth of |
| A. | Lateral axillary buds |
| B. | Apical buds |
| C. | Roots on stem cuttings |
| D. | Parthenocarpy |
| Answer» B. Apical buds | |
| 52. |
Translocation of carbohydrate nutrient usually occurs in the form of |
| A. | Glucose |
| B. | Maltose |
| C. | Starch |
| D. | Sucrose |
| Answer» E. | |
| 53. |
In plant body, the water and minerals are transported by |
| A. | Bast |
| B. | Collenchyma |
| C. | Parenchyma |
| D. | Xylum |
| Answer» E. | |
| 54. |
process by which plant prepare their food is |
| A. | Carboghdrolysis |
| B. | Metabolic synthesis |
| C. | Photsynthesis |
| D. | Photosyntization |
| Answer» D. Photosyntization | |
| 55. |
In plant process of transpiration occur through |
| A. | Stem |
| B. | Leaves |
| C. | Root |
| D. | All the areial part of plant |
| Answer» E. | |
| 56. |
Indole acetic acid is |
| A. | Enzyme |
| B. | Fungicides |
| C. | Amino acid |
| D. | Auxin |
| Answer» E. | |
| 57. |
What is the importance of respiration in plant |
| A. | It liberates energy |
| B. | It provides O |
| C. | to plants |
| D. | It liberates CO |
| E. | All the above |
| Answer» B. It provides O | |
| 58. |
End product of aerobic respiration are |
| A. | Sugar and oxygen |
| B. | Carbon dioxide, water and energy |
| C. | Water and energy |
| D. | Carbon dioxide and energy |
| Answer» C. Water and energy | |
| 59. |
Which one yields the Maximum energy |
| A. | krebs cycle |
| B. | Anaerobic respiration |
| C. | Glycolysis |
| D. | Aerobic respiration |
| Answer» E. | |
| 60. |
Which gas is essinitial for photosynthesis |
| A. | O |
| B. | CO |
| C. | N |
| D. | CO |
| Answer» C. N | |
| 61. |
Respiration is found in |
| A. | In all living cell in light |
| B. | All living cell in dark |
| C. | In all living cell both in light and dark |
| D. | Only in non green cells both in light and dark |
| Answer» D. Only in non green cells both in light and dark | |
| 62. |
Maximum amount of energy (ATP) is librerated on oxidation of |
| A. | Fats |
| B. | Protein |
| C. | Starch |
| D. | Vitamin |
| Answer» B. Protein | |
| 63. |
Respiration can occur in the absence of oxygen in |
| A. | Solanum tuberosum |
| B. | Spirogyra |
| C. | Yeast |
| D. | All the above |
| Answer» D. All the above | |
| 64. |
Photosynthesis is/an |
| A. | Photochemical process |
| B. | Chemical process |
| C. | Oxidation process |
| D. | Reduction process |
| Answer» E. | |
| 65. |
The most accepted theory for ascent of sap sap was given by |
| A. | Sachs |
| B. | Bose |
| C. | Dixon and Joly |
| D. | Strasburger |
| Answer» D. Strasburger | |
| 66. |
Anaerobic respiration takes place |
| A. | In absence of oxygen |
| B. | In presence of oxygen |
| C. | In presence of CO |
| D. | In absence of CO |
| Answer» B. In presence of oxygen | |
| 67. |
Dwarfness can be controlled by treating the plant with |
| A. | Cytokinin |
| B. | Gibberellic acid |
| C. | Auxin |
| D. | Antigibberellin |
| Answer» C. Auxin | |
| 68. |
Ethylene is |
| A. | A gaseous metabolites |
| B. | A gaseous enzyme |
| C. | A gaseous hormone |
| D. | A solid hormone |
| Answer» D. A solid hormone | |
| 69. |
Gibberellins is first separated from |
| A. | Algae |
| B. | Fungi |
| C. | Bacteria |
| D. | Virus |
| Answer» C. Bacteria | |
| 70. |
Plant cell kept in hypertonic solution will get |
| A. | Lysed |
| B. | Turgir |
| C. | Deplasmolysed |
| D. | Plasmolysed |
| Answer» E. | |
| 71. |
Hydrophonics is growing of plant in |
| A. | Laboratory |
| B. | Phytotron |
| C. | Liquid culture medium |
| D. | Solid culture medium |
| Answer» D. Solid culture medium | |
| 72. |
Water avilable in soil for the root of plant is |
| A. | Capillary Water |
| B. | Gravitational Water |
| C. | Hygroscopic Water |
| D. | None of these |
| Answer» B. Gravitational Water | |
| 73. |
The selectively permeable membrane of the cell is |
| A. | Plasma lemma |
| B. | Cytoplasm |
| C. | Cell wall |
| D. | None of these |
| Answer» B. Cytoplasm | |
| 74. |
Water movement against gravity is caused by |
| A. | Imbibition |
| B. | Transpiration |
| C. | Osmosis |
| D. | Diffusion |
| Answer» C. Osmosis | |
| 75. |
An element present in
|
| A. | Ca |
| B. | Fe |
| C. | Mg |
| D. | S |
| Answer» D. S | |
| 76. |
Stomata generally open duting |
| A. | Day time |
| B. | During night |
| C. | Not open |
| D. | None of these |
| Answer» B. During night | |
| 77. |
Transpiration is high under |
| A. | Dry environment |
| B. | Low atmospheric pressure |
| C. | High temperature |
| D. | All of the above |
| Answer» E. | |
| 78. |
Which one produces more ethylene? |
| A. | Green apple |
| B. | Green banana |
| C. | Repening banana |
| D. | Fresh potato tuber |
| Answer» D. Fresh potato tuber | |
| 79. |
Which of the following statements is/are correct regarding auxin |
| A. | It inhibits the following of leaf |
| B. | It destroy weeds |
| C. | It permote apical grouth |
| D. | All of above |
| Answer» E. | |
| 80. |
Naturally accurring auxin is |
| A. | IAA |
| B. | Ethyle |
| C. | 2, 4-D |
| D. | Benzal dehyole |
| Answer» B. Ethyle | |
| 81. |
Respiration is |
| A. | Catabolic process that uses carbon dioxide, produce oxygen and converted released energy to ATP |
| B. | Anabolic process that uses oxygen, and carbon dioxide, to from ATP |
| C. | Anabolic process that uses oxygen, produces carbon dioxide and converts released energy int ATP |
| D. | Catabolic process that uses oxygen, reduces carbon dioxide and releases energy is the form ATP |
| Answer» E. | |
| 82. |
Chlorophyll is present |
| A. | On the surface of chloroplast |
| B. | Dispersed throughout chloroplast |
| C. | In the stroma of chloroplast |
| D. | In the grana of chloroplast |
| Answer» E. | |
| 83. |
Transpiration differ from evaporation in |
| A. | Rate of water loss |
| B. | Transpiration is a physiological process while evaporation is physical process |
| C. | Transpiration is physical process while evaporation is a physiological process |
| D. | Frequency of water loss |
| Answer» C. Transpiration is physical process while evaporation is a physiological process | |
| 84. |
Osmosis is defined as |
| A. | Flow of solvent (water) through a semipermeable Membrane from less concentrated solution to more concentrated solution |
| B. | Flow of solute from a semipermeable membrane |
| C. | Flow of water without a membrane |
| D. | None of the above |
| Answer» B. Flow of solute from a semipermeable membrane | |
| 85. |
Root hairs absorb water when |
| A. | They respire rapidly |
| B. | Soil solution is isotonic |
| C. | Salt concentration of cell sap is high |
| D. | Salt concentration of soil is high |
| Answer» D. Salt concentration of soil is high | |
| 86. |
The membrane that allows some of solute molecules to pass through it and prevent others is called |
| A. | Permeable membrane |
| B. | Semipermeable |
| C. | Selectively permeable membrane |
| D. | Impermeable membrane |
| Answer» D. Impermeable membrane | |
| 87. |
In Photosynthesis |
| A. | Light energy is converted into chemical energy |
| B. | Chemical energy is converted into light energy |
| C. | Chemical energy is converted into electrical energy |
| D. | Light energy is converted into mechanical energy |
| Answer» B. Chemical energy is converted into light energy | |
| 88. |
A cell placed in strong salt solution will shrink because |
| A. | Cytoplasm will decompose |
| B. | Mineral salt will break the cell wall |
| C. | Salt water enters the cell |
| D. | Water comes out from cell by exosmosis |
| Answer» E. | |
| 89. |
Osmosis Involves |
| A. | Diffusion of suspended particle from higher to lower concentration |
| B. | Diffusion of suspended particle from lower to higher concentration |
| C. | Diffusion of water from more to less concentrated side |
| D. | Diffusion of water from less to more concentrated side |
| Answer» E. | |
| 90. |
Auxin is a |
| A. | Growth catylser |
| B. | Growth destroyer |
| C. | Growth hormone |
| D. | Growth inhibitor |
| Answer» D. Growth inhibitor | |
| 91. |
Assertion (A) : Cellulose is used in making shatter proof glass.
|
| A. | Both A and R are true and R is the correct |
| B. | Both A and R are true but R is not a correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are true but R is not a correct explanation of A | |
| 92. |
Most of photosynthesis process occur in |
| A. | Blue and red region of light |
| B. | In the green and yellow region of light |
| C. | In the blue and orange region of light |
| D. | In the violet and orange region of light |
| Answer» B. In the green and yellow region of light | |
| 93. |
Consider the following plants
|
| A. | 1 and 2 |
| B. | 2, 3 and 4 |
| C. | 1, 3 and 4 |
| D. | 1, 2, 3 and 4 |
| Answer» D. 1, 2, 3 and 4 | |
| 94. |
With reference to the movement of molecule of fluid in plant, consider the following statements
|
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» D. Neither 1 nor 2 | |
| 95. |
Consider the following
|
| A. | 1 and 2 only |
| B. | 3 only |
| C. | 1 and 3 |
| D. | 1, 2 and 3 |
| Answer» E. | |
| 96. |
The phenomenan by which water molecules from a weaker solution to a stronger solution through a semipermeable-membrane is called |
| A. | Diffusion |
| B. | Osmosis |
| C. | Transpiration |
| D. | Translocation |
| Answer» C. Transpiration | |
| 97. |
In glycolysis ultimately |
| A. | Protein is converted into glucose |
| B. | Glucose is converted to glysogen |
| C. | Starch is converted into glycogen |
| D. | Glucose is converted into pyruvic acid |
| Answer» E. | |
| 98. |
Fermentation is |
| A. | Anearobic respiration |
| B. | Incomplete oxidation of carbohydrate |
| C. | Complete oxidation of carbohydrate |
| D. | None of these |
| Answer» C. Complete oxidation of carbohydrate | |
| 99. |
Krebs cycle is |
| A. | Aerobic |
| B. | Anaerobic |
| C. | Anabolic |
| D. | None of the above |
| Answer» B. Anaerobic | |
| 100. |
Indol acetic acid is a/an |
| A. | Enzyme |
| B. | Fungicide |
| C. | Amino acid |
| D. | Auxin |
| Answer» E. | |