MCQOPTIONS
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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Where are Enzymes found? |
| A. | Food |
| B. | Human body |
| C. | Medicines |
| D. | None |
| Answer» C. Medicines | |
| 52. |
Which of the following is an Autotroph? |
| A. | Fish |
| B. | Algae |
| C. | Butterfly |
| D. | Mushroom |
| Answer» C. Butterfly | |
| 53. |
Study of inter relationship between living organism and their environment is called _______ |
| A. | Plant geography |
| B. | Plant social science |
| C. | Ecology |
| D. | Ecosystem |
| Answer» D. Ecosystem | |
| 54. |
What provides electrons for the light reactions? |
| A. | Water |
| B. | Oxygen |
| C. | Carbon dioxide |
| D. | Light |
| Answer» B. Oxygen | |
| 55. |
Which of the following harmone is called the emergency harmone ? |
| A. | Insulin |
| B. | Adrenaline |
| C. | Estrogen |
| D. | Oxytocin |
| Answer» C. Estrogen | |
| 56. |
DNA can be found in what Organelles? |
| A. | Chloroplasts and mitichondria |
| B. | Nucleus and ribosomes |
| C. | Ribosomes and mitochondria |
| D. | Endoplasmic reticulum and nucleus |
| Answer» B. Nucleus and ribosomes | |
| 57. |
In which of the following organelles does photosynthesis take place? |
| A. | Miochondria |
| B. | Chloroplast |
| C. | Central vacuole |
| D. | Ribosome |
| Answer» C. Central vacuole | |
| 58. |
Select the correct statement about the Heart Valves. |
| A. | Aortic and pulmonary valves control the flow of blood into the heart. |
| B. | The av valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur. |
| C. | The tricuspid valve divides the left atrium from the left ventricle. |
| D. | The mitral valve separates the right atrium from the right ventricle. |
| Answer» C. The tricuspid valve divides the left atrium from the left ventricle. | |
| 59. |
Hardest Part of the Human Body? |
| A. | Tooth enamel |
| B. | Femur |
| C. | Temporal bone of skull |
| D. | Knee bone |
| Answer» B. Femur | |
| 60. |
Organisms that depend only on raw plant products are said to be |
| A. | Herbivorous |
| B. | Vegetarian |
| C. | Carnivorous |
| D. | Omnivorous |
| Answer» B. Vegetarian | |
| 61. |
Flowers in which polllination takes place by insect their pollen grains are ________ |
| A. | Smooth and dry |
| B. | Rough and sticky |
| C. | Rough and dry |
| D. | Large in size |
| Answer» C. Rough and dry | |
| 62. |
Who is known as father of Biology |
| A. | Aristotle |
| B. | Darwin |
| C. | Lamark |
| D. | Linneus |
| Answer» B. Darwin | |
| 63. |
Branch of science which deal with the study of causative agent of disease is __________ |
| A. | Ecology |
| B. | Etiology |
| C. | Eugenics |
| D. | Euthenics |
| Answer» C. Eugenics | |
| 64. |
Plantain is |
| A. | A tree |
| B. | An annual herb |
| C. | A perennial herb |
| D. | A shrub |
| Answer» D. A shrub | |
| 65. |
Human Heart is made up of |
| A. | Nervous tissue |
| B. | Cardiac muscle |
| C. | Nonstriated muscle |
| D. | Connective tissue |
| Answer» C. Nonstriated muscle | |
| 66. |
Plants grow in size because of |
| A. | Addition of cells |
| B. | Increase in size of cells |
| C. | Enlargement of cells |
| D. | Elongation of cells |
| Answer» B. Increase in size of cells | |
| 67. |
Five Kingdom Classification was preposed by _________ |
| A. | Linnacus |
| B. | George bentham |
| C. | Ariostotle |
| D. | Whittaker |
| Answer» E. | |
| 68. |
Biological control is to check growth of |
| A. | Plants |
| B. | Animals |
| C. | Weeds |
| D. | One pest by another |
| Answer» E. | |
| 69. |
In which of the following kind of organisms is the phenomenon found where in the female kills the male after copulation __________ |
| A. | Drgonfly |
| B. | Honey bee |
| C. | Spider |
| D. | Pit viper |
| Answer» D. Pit viper | |
| 70. |
Cretinism is due to the disorder of the glands |
| A. | Thymus |
| B. | Parathyroid |
| C. | Thyroid |
| D. | Adrenal |
| Answer» D. Adrenal | |
| 71. |
AIDS is caused by the organisms which are |
| A. | Bacteria |
| B. | Fungi |
| C. | Viruses (htlv iii) |
| D. | Protozoa |
| Answer» D. Protozoa | |
| 72. |
Antisnake venom is prepared by |
| A. | Pasteur institute |
| B. | Hoffkine's institute |
| C. | Birla's institute |
| D. | Indian science institute |
| Answer» C. Birla's institute | |
| 73. |
Phycology is the branch of botany in which we study about__________ |
| A. | Algae |
| B. | Fungi |
| C. | Ecology |
| D. | Virus |
| Answer» B. Fungi | |
| 74. |
Which of the following organelle is known as the 'Power House' of the cell? |
| A. | Golgi bodies |
| B. | Ribosomes |
| C. | Mitochondria |
| D. | None of these |
| Answer» D. None of these | |
| 75. |
Man has...............pairs of salivary glands |
| A. | 4 |
| B. | 6 |
| C. | 3 |
| D. | 8 |
| Answer» D. 8 | |
| 76. |
A colour blind person has difficulty in distinguishing which of the two colours ? |
| A. | Green & red |
| B. | White & red |
| C. | Blue & red |
| D. | Red & black |
| Answer» B. White & red | |
| 77. |
The disease Goitre is caused in persons who do not have in their diet sufficient |
| A. | Calcium |
| B. | Sodium |
| C. | Iodine |
| D. | Iron |
| Answer» D. Iron | |
| 78. |
Oparin is known for his hypothesis on |
| A. | Origin of species |
| B. | Origin of life |
| C. | One germ one disease |
| D. | One gene one enzyme |
| Answer» C. One germ one disease | |
| 79. |
Genes are situated on _________ |
| A. | Chromosome |
| B. | Mitochondria |
| C. | Plastids |
| D. | Ribosomes |
| Answer» B. Mitochondria | |
| 80. |
Food wrapped in news paper is likely to get contaminated by |
| A. | Magnesium |
| B. | Alluminium |
| C. | Lead |
| D. | Copper |
| Answer» D. Copper | |
| 81. |
The mode of nutrition in which particulate food is devoured is |
| A. | Holozoic |
| B. | Holophytic |
| C. | Saprophytic |
| D. | Parasitic |
| Answer» B. Holophytic | |
| 82. |
The universal donor belongs to blood group |
| A. | A |
| B. | B |
| C. | Ab |
| D. | O |
| Answer» E. | |
| 83. |
What is scientific name of "Cotton" ? |
| A. | Azadhirachta indica |
| B. | Phaseolies auicus |
| C. | Gossypium herbaceum |
| D. | Ficus benghalensis |
| Answer» D. Ficus benghalensis | |
| 84. |
Sleeping sickness in man is caused by the organism |
| A. | Plasmodium |
| B. | Entamoeba |
| C. | Giardia |
| D. | Trypanosoma |
| Answer» E. | |
| 85. |
Spices detoriate after prolonged boiling |
| A. | The essential oils in the spices easily evaporate |
| B. | Spices are put in the pickels to add to the flavour |
| C. | Both a and b |
| D. | None |
| Answer» B. Spices are put in the pickels to add to the flavour | |
| 86. |
The insects do not have blood pigments because |
| A. | There is no blood |
| B. | Blood does not have a respirratory function |
| C. | Tissues have pigments |
| D. | Pigments are elsewhere |
| Answer» C. Tissues have pigments | |
| 87. |
Smallest bone of human body is _________ |
| A. | Nails |
| B. | Fibula |
| C. | Bone of nose |
| D. | Stapes |
| Answer» E. | |
| 88. |
Important objective of biotechnology in agriculture section is _________ |
| A. | % produce best resistant varieties of plant |
| B. | % increase the nitrogen content |
| C. | % decrease the seed number |
| D. | % increase the plant weight |
| Answer» B. % increase the nitrogen content | |
| 89. |
Statement which is true about bacteria ? |
| A. | All bacteria are autotrophs |
| B. | Most of them are heterotrophs but some are autotrophs |
| C. | All bacteria heterophs |
| D. | All bacteria are photosynthetic |
| Answer» C. All bacteria heterophs | |
| 90. |
Some species of which of the below kinds of organisms are employed as biopesticides? |
| A. | 1 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 |
| Answer» B. 2 and 3 only | |
| 91. |
Cancer is caused by |
| A. | Loss of immunity of cells |
| B. | Uncontrolled meiosis |
| C. | Uncontrolled mitosis |
| D. | Rupturing of cells |
| Answer» D. Rupturing of cells | |
| 92. |
The water readily available to plants for absorption by roots is |
| A. | Gravitational water |
| B. | Rain water |
| C. | Hygroscopic water |
| D. | Capillary water |
| Answer» E. | |
| 93. |
Which one of the following strongly threatens biodiversity? |
| A. | Eragile ecosystems such as mangroves and wetlands |
| B. | Inaccessible habitates in the himalayas |
| C. | Desstruction of natural habitates and regetation and jhum cultivation |
| D. | Creation of biosphere reserves |
| Answer» D. Creation of biosphere reserves | |
| 94. |
Organisms that feed on the excreta of other organisms are called |
| A. | Autotrophs |
| B. | Heterotrophs |
| C. | Coprophagous |
| D. | Saprotrophs |
| Answer» D. Saprotrophs | |
| 95. |
Organisms which synthesise their own food are called |
| A. | Autotrophs |
| B. | Heterotrophs |
| C. | Auxotrophs |
| D. | Saprotrophs |
| Answer» B. Heterotrophs | |
| 96. |
The technique of DNA fingerprinting in human was developed for first time by _________ |
| A. | Lalji singh |
| B. | Alec jeffreys |
| C. | R. ericson |
| D. | J. black |
| Answer» C. R. ericson | |
| 97. |
In which of the following mammals estrous cycle is absent ? |
| A. | Rabbit |
| B. | Horse |
| C. | Cow |
| D. | Monkey |
| Answer» E. | |
| 98. |
The protoplasm of a child is exactly the same as that of its |
| A. | Mother |
| B. | Father |
| C. | Grandfather |
| D. | Identical twin |
| Answer» E. | |
| 99. |
Which of the following plays an important part in photosynthesis? |
| A. | Chloroplast |
| B. | Centrosome |
| C. | Tonoplast |
| D. | Nematoblast |
| Answer» B. Centrosome | |
| 100. |
Branch of biology in which we study about relationship between living and their environment |
| A. | Physiology |
| B. | Genetics |
| C. | Ecology |
| D. | Geology |
| Answer» D. Geology | |