MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 274 Mcqs, each offering curated multiple-choice questions to sharpen your UPSC IAS Exam knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Column-I Column-IIA.parasitesP.fungiB.saprophytesQ.HumansC.AutotrophsR.LeechD.HolozoicS.Algae. |
| A. | A-P; B-Q; C-R; D-S |
| B. | A-R; B-P; C-S; D-Q |
| C. | A-P; B-R; C-Q; D-S |
| D. | A-R; B-S; C-P; D-Q |
| Answer» C. A-P; B-R; C-Q; D-S | |
| 52. |
List-IList-II [IAS Prelim]A. Atropine 1. Local anaesthesiaB. Ether 2. Heart troubleC. Nitroglycerine3. Dilation of pupilD. Pyrethrin 4. Mosquito controlCodes: |
| A. | A-1; B-3; C-2; D-4 |
| B. | A-1; B-3; C-4; D-2 |
| C. | A-3; B-1; C-4; D-2 |
| D. | A-3; B-1; C-2; D-4 |
| Answer» C. A-3; B-1; C-4; D-2 | |
| 53. |
Haemophilia is a genetic disorder which leads to [IAS Prelim] |
| A. | decrease in haemoglobin level |
| B. | rheumatic heart disease |
| C. | decrease in WBC |
| D. | non-clotting of blood |
| Answer» E. | |
| 54. |
Antigen is a substance which [IAS Prelim] |
| A. | lowers body temperatures |
| B. | destroys harmful bacteria |
| C. | triggers the immune system |
| D. | is used as an antidote to poison |
| Answer» D. is used as an antidote to poison | |
| 55. |
The major chemical compound found in kidney stones is: [IAS Prelim] |
| A. | urea |
| B. | calcium carbonate |
| C. | calcium oxalate |
| D. | calcium sulphate |
| Answer» D. calcium sulphate | |
| 56. |
People drinking water from a shallow hand pump, are likely to suffer from all of the following diseases except [IAS Prelim] |
| A. | Cholera |
| B. | Typhoid |
| C. | Jaundice |
| D. | Fluorosis |
| Answer» E. | |
| 57. |
Consider the following statements. [IAS Prelim] AIDS -is transmitted 1. By sexual intercourse 2. By blood transfusion 3. By mosquitoes and other blood sucking insects 4. Across the placenta |
| A. | 1, 2 and 3 are correct |
| B. | 1, 2 and 4 are correct |
| C. | 1, 3 and 4 are correct |
| D. | 1 and 3 are correct |
| Answer» C. 1, 3 and 4 are correct | |
| 58. |
Which of the following disease is confirmed by 'widal test'? |
| A. | Tuberculosis |
| B. | Typhoid |
| C. | Plague |
| D. | Tetanus |
| Answer» C. Plague | |
| 59. |
Which of the following is a communicable disease? |
| A. | Phenylketoneuria |
| B. | Cancer |
| C. | Rabies |
| D. | Alkaptonuria |
| Answer» D. Alkaptonuria | |
| 60. |
Which of the following is an air-borne disease? |
| A. | Tuberculosis |
| B. | Cholera |
| C. | Jaundice |
| D. | Brain fever |
| Answer» B. Cholera | |
| 61. |
Which Vector Spread the yellow fever disease? |
| A. | Musca sp |
| B. | Anopheles sp |
| C. | Culex sp |
| D. | Aedes aegypti |
| Answer» E. | |
| 62. |
DPT vaccine stands for |
| A. | diphtheria, polio & tuberculosis |
| B. | diphtheria, pertussis & tuberculosis |
| C. | diphtheria, polio & tetanus |
| D. | diphtheria, pertussis and tetanus |
| Answer» E. | |
| 63. |
Column-I Column-IIA.Small poxP.BacteriaB.CholeraQ.VirusC.MalariaR.Deficiency of mineralsD.AnaemiaS.Female mosquito |
| A. | A-S; B-Q; C-R; D-P |
| B. | A-Q; B-P; C-S; D-R |
| C. | A-S; B-R; C-Q; D-P |
| D. | A-R; B-S; C-P; D-Q |
| Answer» C. A-S; B-R; C-Q; D-P | |
| 64. |
Column-I (Drug/Cure) Column-II (Diseases)A.StreptomycinP.Viral DiseaseB.ChloroquineQ.Diabetes MellitusC.PenicillinR.Disease caused by BacteriaD.insulinS.Malaria |
| A. | A-R; B-S; C-P; D-Q |
| B. | A-R; B-S; C-Q; D-P |
| C. | A-R; B-Q; C-P; D-S |
| D. | A-P; B-Q; C-R; D-S |
| Answer» B. A-R; B-S; C-Q; D-P | |
| 65. |
The malignant tertian malaria is caused by |
| A. | Plasmodium vivax |
| B. | Plasmodium falciparum |
| C. | Plasmodium ovale |
| D. | Plasmodium malaria |
| Answer» C. Plasmodium ovale | |
| 66. |
The term "antibiotic" was coined by |
| A. | Alexander fleming |
| B. | Edward Jenner |
| C. | Louis Pasteur |
| D. | Selman Waksman |
| Answer» E. | |
| 67. |
Passive immunity was discovered by |
| A. | Robert Koch |
| B. | L. Pasteur |
| C. | Edward Jenner |
| D. | Eemil Von Behring |
| Answer» E. | |
| 68. |
Column-I Column-IIA.ZincI.ChlorophyllB.SulphurII.IAAC.MagnesiumIII.Nitrate reductaseD.MolybdenumIV.Cysteine |
| A. | A-I, B-II, C-III, D-IV |
| B. | A-III, B-IV, C-I, D-II |
| C. | A-III, B-I, C-II, D-IV |
| D. | A-II, B-IV, C-I, D-III |
| Answer» E. | |
| 69. |
Column-I (Minerals) Column-II (Functions)A.KI.Stomatal openingB.MoII.Constituent of cell membraneC.PIII.Photolysis of waterD.MnIV.Free ion V.Component of nitrogenise and nitrate reductase |
| A. | A-I, IV B-V C-II D-III |
| B. | A-I, V B-IV C-III D-II |
| C. | A-I, V B-IV C-II D-III |
| D. | A-IV B-I C-III D-II, V |
| Answer» B. A-I, V B-IV C-III D-II | |
| 70. |
Boron in green plants assists in |
| A. | sugar transport |
| B. | activation of enzymes |
| C. | acting as enzyme cofactor |
| D. | photosynthesis |
| Answer» B. activation of enzymes | |
| 71. |
Which of the following is not caused by deficiency of mineral nutrition? |
| A. | Necrosis |
| B. | Chlorosis |
| C. | Etiolation |
| D. | Shortening of internodes |
| Answer» D. Shortening of internodes | |
| 72. |
The major role of minor elements inside living organisms is to act as |
| A. | binder of cell structure. |
| B. | co-factors of enzymes. |
| C. | building blocks of important amino acids. |
| D. | constituent of hormones. |
| Answer» C. building blocks of important amino acids. | |
| 73. |
Hydroponics refers to the plant development |
| A. | without soil. |
| B. | in saline soil. |
| C. | in water without soil. |
| D. | without soil with alkaline pH. |
| Answer» D. without soil with alkaline pH. | |
| 74. |
Photosynthesis is an important mode of autotrophic nutrition. The event which does not occur in photosynthesis is |
| A. | Conversion of light energy to chemical energy |
| B. | Reduction of carbon dioxide to carbohydrate |
| C. | Oxidation of carbon to carbon dioxide |
| D. | Absorption of light energy by chlorophyll |
| Answer» D. Absorption of light energy by chlorophyll | |
| 75. |
Which mineral is obtained from the atmosphere? |
| A. | Potassium |
| B. | Iron |
| C. | Magnesium |
| D. | Nitrogen |
| Answer» E. | |
| 76. |
Exchange of gases in leaf occurs through |
| A. | tentacles |
| B. | skin of the leaf |
| C. | stomata |
| D. | root hair |
| Answer» D. root hair | |
| 77. |
The site of photosynthesis in plants is |
| A. | mitochondria |
| B. | chloroplasts |
| C. | leucoplasts |
| D. | dictyosomes |
| Answer» C. leucoplasts | |
| 78. |
Haemophilia is a genetic disorder which lead to [IAS] |
| A. | decrease in haemoglobin level |
| B. | rheumatic heart disease |
| C. | decrease in WBC |
| D. | non-clotting of blood |
| Answer» E. | |
| 79. |
Which one among the following is not correct about Down's syndrome? [CDS] |
| A. | It is a genetic disorder |
| B. | Effected individual has early ageing |
| C. | Effected person has mental retardation |
| D. | Effected person has furrowed tongue with open mouth |
| Answer» C. Effected person has mental retardation | |
| 80. |
Between which one of the following sets of blood groups, is the blood transfusion possible? [CDS] |
| A. | A and O |
| B. | B and A |
| C. | A and AB |
| D. | AB and 0 |
| Answer» D. AB and 0 | |
| 81. |
A mother of blood group O has a group O child. What could be the blood group of father of the child? [CDS] |
| A. | Only O |
| B. | A or B or O |
| C. | A or B |
| D. | Only AB |
| Answer» C. A or B | |
| 82. |
Plasmid has been used as vector because |
| A. | both its ends show replication. |
| B. | it can move between prokaryotic and eukaryotic cells. |
| C. | it is circular DNA which have capacity to join to eukaryotic DNA. |
| D. | it has antibiotic resistance gene. |
| Answer» D. it has antibiotic resistance gene. | |
| 83. |
Golden rice is a transgenic crop of the future with the following improved trait - |
| A. | High lysine (essential amino acid) content |
| B. | Insect resistance |
| C. | High protein content |
| D. | High vitamin-A content |
| Answer» E. | |
| 84. |
Genetically engineered human insulin is prepared by using- |
| A. | E. coli |
| B. | Rhizopus |
| C. | Pseudomonas |
| D. | Yeast |
| Answer» B. Rhizopus | |
| 85. |
First cloned animal is - |
| A. | Dog |
| B. | Molly |
| C. | Dolly sheep |
| D. | Polly sheep |
| Answer» D. Polly sheep | |
| 86. |
Which of the following is false for Bt transgenic plant - |
| A. | Disease resistance |
| B. | Prepared by Bacillus thuringiensis |
| C. | It is recombinant type |
| D. | No such plant is known |
| Answer» E. | |
| 87. |
Bacillus thuringiensis (Bt) strains have been used for designing novel - |
| A. | Bio-metallurgical techniques |
| B. | Bio-insecticidal plants |
| C. | Bio-mineralization processes |
| D. | Bio-fertilizers |
| Answer» C. Bio-mineralization processes | |
| 88. |
The bacteria generally used for genetic engineering is |
| A. | Agrobacterium |
| B. | Bacillus |
| C. | Pseudomonas |
| D. | Clostridium |
| Answer» B. Bacillus | |
| 89. |
Which one of the following genetic diseases is sex-linked? [IAS Prelim] |
| A. | Royal haemophilia |
| B. | Tay-Sachs disease |
| C. | Cystic fibrosis |
| D. | Hypertension |
| Answer» B. Tay-Sachs disease | |
| 90. |
First transgenic plant - |
| A. | Potato |
| B. | Tomato |
| C. | Tobacco |
| D. | Maize |
| Answer» D. Maize | |
| 91. |
Column-I Column-II A. Incomplete dominance I. Drosophila B. Mendelian disorder II. Antirrhinum sp. C. Transforming principle III. Griffith D. Dihybrid cross IV. Haemophilia |
| A. | A-I; B-IV; C-III; D-II |
| B. | A-IV; B-II; C-III; D-I |
| C. | A-II; B-III; C-IV; D-I |
| D. | A-II; B-IV; C-III; D-I |
| Answer» E. | |
| 92. |
Column-I Column-II A. ABO blood groups I. Dihybrid cross B. Law of segregation cross II. Monohybrid C. Law of Independent assortment III. Base pairs substitution D. Gene mutation IV. Multiple allelism |
| A. | A-II; B-I; C-IV; D-III |
| B. | A-IV; B-I; C-II; D-III |
| C. | A-IV; B-II; C-I; D-III |
| D. | A-II; B-III; C-IV; D-I |
| Answer» D. A-II; B-III; C-IV; D-I | |
| 93. |
Mutations can be induced with |
| A. | infrared radiations |
| B. | I AA |
| C. | ethylene |
| D. | gamma radiations |
| Answer» E. | |
| 94. |
Sickle cell anaemia is |
| A. | caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin. |
| B. | caused by a change in a single base pair of DNA. |
| C. | characterized by elongated sickle like RBCs with a nucleus. |
| D. | an autosomal linked dominant trait. |
| Answer» C. characterized by elongated sickle like RBCs with a nucleus. | |
| 95. |
The ratio of phenotypes in \[{{F}_{2}}\] of a monohybrid cross is |
| A. | 3 : 1 |
| B. | 1 : 2 : 1 |
| C. | 9 : 3 : 3 : 1 |
| D. | 2 : 1 |
| Answer» B. 1 : 2 : 1 | |
| 96. |
A complete set of chromosomes inherited as a unit from one parent, is known as |
| A. | Karyotype |
| B. | Gene pool |
| C. | Genome |
| D. | Genotype |
| Answer» D. Genotype | |
| 97. |
In animals sex determination is due to |
| A. | X-chromosome |
| B. | Y-chromosome |
| C. | A-chromosome |
| D. | B-chromosome |
| Answer» E. | |
| 98. |
From heredity point of view which marriage is not suitable |
| A. | Man Rh (-) and Woman Rh (+) |
| B. | Both Rh (+) |
| C. | Both Rh (-) |
| D. | Man Rh (+) and Woman Rh (-) |
| Answer» E. | |
| 99. |
Consider the following statements: A. Sex is determined by different factors in various species. B. Exchange of genetic material takes place in asexual reproduction. Which of these statement(s) is/are correct? |
| A. | A only |
| B. | B only |
| C. | Both A and B |
| D. | Neither A nor B |
| Answer» B. B only | |
| 100. |
Which one of the following is not a genetic disorder? [NDA] |
| A. | Colour blindness |
| B. | Down?s syndrome |
| C. | Haemophilia |
| D. | Xerophthalmia |
| Answer» E. | |