MCQOPTIONS
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MCQOPTIONS
This section includes 1075 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following plant hormones are incorrectly paired? |
| A. | abscisic acid- transpiration |
| B. | auxins-apical dominance |
| C. | cytokinins- senescence |
| D. | gibberlins- bud and seed dormancy |
| Answer» E. | |
| 52. |
The latex of which plant is used commercially ? |
| A. | Papaya plant |
| B. | Sial kanta plant |
| C. | Rubber plant |
| D. | Banyan tree |
| Answer» D. Banyan tree | |
| 53. |
Which of the following causes swine flu ? |
| A. | Bacteria |
| B. | Fungi |
| C. | Tapeworm |
| D. | Virus |
| Answer» E. | |
| 54. |
Insectivorous plants trap insects for |
| A. | Nitrogen |
| B. | Fats |
| C. | Vitamins |
| D. | Carbohydrates |
| Answer» B. Fats | |
| 55. |
The only living tissue in plant xylem is |
| A. | Trachea |
| B. | Xylem fibre |
| C. | Xylem parenchyma |
| D. | Tracheid |
| Answer» D. Tracheid | |
| 56. |
The source of oxygen in atmosphere is due to |
| A. | Photosynthesis |
| B. | Excretion |
| C. | Nitrogen fixation |
| D. | Respiration |
| Answer» B. Excretion | |
| 57. |
Which one of the following is a carbohydrate ? |
| A. | Urea |
| B. | Insulin |
| C. | Glycine |
| D. | Glucose |
| Answer» E. | |
| 58. |
The xylem in plants are responsible for : |
| A. | transport of water |
| B. | |
| C. | transport of food |
| D. | transport of amino acids |
| E. | transport of oxygen |
| Answer» B. | |
| 59. |
The first protocol to ban the emissions of choloroflurocarbons in the atmosphere was made in |
| A. | Montreal |
| B. | Osaka |
| C. | Geneva |
| D. | Florida |
| Answer» B. Osaka | |
| 60. |
The food in Onion is stored in the form of _______ |
| A. | Cellulose |
| B. | Protein |
| C. | Starch |
| D. | Sugar |
| Answer» E. | |
| 61. |
Which organ gets affected in Weil s disease? |
| A. | Liver |
| B. | Lung |
| C. | Heart |
| D. | Kidney |
| Answer» E. | |
| 62. |
The main protein found in milk is ______ |
| A. | Albumin |
| B. | Globulin |
| C. | Globin |
| D. | Casein |
| Answer» E. | |
| 63. |
Goitre is caused by the deficiency of ______ |
| A. | Zinc |
| B. | Calcium |
| C. | Iodine |
| D. | Chlorine |
| Answer» D. Chlorine | |
| 64. |
Alfalfa is the name of a |
| A. | Mineral |
| B. | Tribe |
| C. | Grass |
| D. | Town |
| Answer» D. Town | |
| 65. |
Decoding and interpretation of visual information in brain is associated with |
| A. | Frontal lobe |
| B. | Occipital lobe |
| C. | |
| D. | Temporal lobe |
| E. | Parietal lobe |
| Answer» D. Temporal lobe | |
| 66. |
In a rainforest, the vegetation that grows under the shade of a canopy is known as |
| A. | Crown |
| B. | Canopy |
| C. | Understorey |
| D. | Forest floor |
| Answer» D. Forest floor | |
| 67. |
Which of the following green house gases has the greatest heattrapping ability? |
| A. | Chlorofluoro carbon |
| B. | Methane |
| C. | Carbon dioxide |
| D. | Nitrous oxide |
| Answer» B. Methane | |
| 68. |
Biofortification is a |
| A. | method of breeding crops to increase their nutritional value |
| B. | strategy to combat unwanted nutrients in plants |
| C. | |
| D. | method of developing resistance to insect pests |
| E. | method of plant breeding for disease resistance |
| Answer» B. strategy to combat unwanted nutrients in plants | |
| 69. |
Yeast is a _______ |
| A. | Bacteria |
| B. | Fungi |
| C. | Algae |
| D. | Bryophyte |
| Answer» C. Algae | |
| 70. |
If a healthy freshwater fish is placed in salt water, what will be the expected consequence? |
| A. | The fish becomes dehydrated and dies |
| B. | |
| C. | The fish becomes bloated and dies |
| D. | The fish suffers from fungal or bacterial disease and dies |
| E. | There is no observable effect on the fish provided there is sufficient food |
| Answer» B. | |
| 71. |
Which of the following vitamins contain nitrogen? |
| A. | Vitamin A |
| B. | Vitamin B |
| C. | Vitamin C |
| D. | Vitamin D |
| Answer» C. Vitamin C | |
| 72. |
Which of the following vitamins help in the absorption of calcium? |
| A. | Vitamin A |
| B. | Vitamin D |
| C. | Vitamin B |
| D. | Vitamin C |
| Answer» C. Vitamin B | |
| 73. |
A genetically engineered form of brinjal known as the BT brinjal has been developed. The objective of this is |
| A. | to make it pest resistant |
| B. | to improve its taste and nutritive value |
| C. | to make it drought resistant |
| D. | to make its shelflife longer |
| Answer» B. to improve its taste and nutritive value | |
| 74. |
What is the transplantation of graft between genetically identical individuals ? |
| A. | Autograft |
| B. | Isograft |
| C. | Allograft |
| D. | Xenograft |
| Answer» C. Allograft | |
| 75. |
Which of the following is a Dominant Autosomal Disorder? |
| A. | Albinism |
| B. | Cystic Fibrosis |
| C. | Phenyl Ketorunia |
| D. | Alzheimer s Disease |
| Answer» E. | |
| 76. |
BCG is vaccine meant for protection against which of the following diseases? |
| A. | Mumps |
| B. | Tuberculosis |
| C. | Leprosy |
| D. | Tetanus |
| Answer» C. Leprosy | |
| 77. |
Among the following which one lays eggs and does not produce young ones directly? |
| A. | Echidna |
| B. | Kangaroo |
| C. | Porcupine |
| D. | Whale |
| Answer» B. Kangaroo | |
| 78. |
Biodegradable wastes can usually be converted into useful substances with the help of : |
| A. | Bacteria |
| B. | Nuclear proteins |
| C. | Radioactive substances |
| D. | Viruses |
| Answer» B. Nuclear proteins | |
| 79. |
Which one of the following is not the excretory organ? |
| A. | Kidneys |
| B. | Liver |
| C. | Lungs |
| D. | Spleen |
| Answer» E. | |
| 80. |
Solar energy is converted into chemical energy during : |
| A. | Combustion |
| B. | Transition |
| C. | Photosynthesis |
| D. | Fusion |
| Answer» D. Fusion | |
| 81. |
What is cultivation of trees, in dwarf form? |
| A. | Bonsai |
| B. | Ikebana |
| C. | Dwarfism |
| D. | Etiolation |
| Answer» B. Ikebana | |
| 82. |
Mechanism preventing interbreeding is called : |
| A. | Adaptation |
| B. | Isolation |
| C. | Reproduction |
| D. | Recombination |
| Answer» C. Reproduction | |
| 83. |
The chemical component that is invariably found in all viruses is : |
| A. | proteins |
| B. | lipids |
| C. | DNA |
| D. | RNA |
| Answer» B. lipids | |
| 84. |
Which of the following plays an important role in photosynthesis ? |
| A. | Chloroplast |
| B. | Centrosome |
| C. | Tonoplast |
| D. | Nematoblast |
| Answer» B. Centrosome | |
| 85. |
The hormone that stimulates heart beat is : |
| A. | Thyroxine |
| B. | Gastrin |
| C. | Glycogen |
| D. | Dopamine |
| Answer» B. Gastrin | |
| 86. |
___ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. |
| A. | Cellulose |
| B. | Glycogen |
| C. | Pectin |
| D. | Chitin |
| Answer» C. Pectin | |
| 87. |
The deficiency of Niacin-a vitamin of B complex group causes the disease _____ |
| A. | Marasmus |
| B. | Pellagra |
| C. | Rickets |
| D. | Night blindness |
| Answer» C. Rickets | |
| 88. |
Pneumonia is a bacterial disease caused by the type of bacteria called _________ |
| A. | Bacilli |
| B. | Cocci |
| C. | Sprilli |
| D. | Vibrio |
| Answer» C. Sprilli | |
| 89. |
If waste materials contaminate the source of drinking water, which of the following diseases will spread? |
| A. | Scurvy |
| B. | Typhoid |
| C. | Malaria |
| D. | Anaemia |
| Answer» C. Malaria | |
| 90. |
Increased RBC s in the blood leads to a condition called |
| A. | Anemia |
| B. | Haemophilia |
| C. | Polycythemia |
| D. | Leukaemia |
| Answer» D. Leukaemia | |
| 91. |
One of the best solutions to get rid of non-biodegradable waste is |
| A. | Burning |
| B. | Dumping |
| C. | Burying |
| D. | Recycling |
| Answer» E. | |
| 92. |
The tree species most commonly used in social forestry is : |
| A. | Peepal |
| B. | Gulmohar |
| C. | Eucalyptus |
| D. | Mango |
| Answer» D. Mango | |
| 93. |
Which organism is responsible for alcohol fermentation? |
| A. | Chlorella |
| B. | Yeast |
| C. | Agaricus |
| D. | Puccinia |
| Answer» C. Agaricus | |
| 94. |
Which part of brain is also known as little brain ? |
| A. | Cerebrum |
| B. | Cerebellum |
| C. | Thalamus |
| D. | Hypothalamus |
| Answer» C. Thalamus | |
| 95. |
Golden Revolution in India refers to growth of |
| A. | Militancy in the northeast |
| B. | |
| C. | Oilseeds production |
| D. | Horticulture |
| E. | Increased importing of gold |
| Answer» C. Oilseeds production | |
| 96. |
Which one of the following events in a botanical garden is never directly influenced by light ? |
| A. | Flowering |
| B. | Photosynthesis |
| C. | Transpiration |
| D. | Fertilization |
| Answer» E. | |
| 97. |
Name the Japanese art of miniaturisation of trees. |
| A. | Bonsai |
| B. | Kirigami |
| C. | Origami |
| D. | Ikebana |
| Answer» B. Kirigami | |
| 98. |
Survival of the fittest was coined by |
| A. | Darwin |
| B. | Lamarck |
| C. | Mendel |
| D. | Weismann |
| Answer» B. Lamarck | |
| 99. |
Pellagra and Scurvy are caused by which pair of vitamin deficiency respectively |
| A. | Vitamin C and Vitamin D |
| B. | Vitamin B-12 and Vitamin C |
| C. | Vitamin C and Vitamin A |
| D. | Vitamin A and Vitamin B-12 |
| E. | None of these |
| Answer» F. | |
| 100. |
The vitamin which is very labile and easily destroyed during cooking as well as storage is vitamin |
| A. | D |
| B. | C |
| C. | B |
| D. | <sub>6</sub> |
| E. | K |
| Answer» C. B | |