MCQOPTIONS
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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.
| 101. |
Gene is made of which chemical |
| A. | D.N.A. |
| B. | R.N.A. |
| C. | protein |
| D. | enzyme |
| Answer» B. R.N.A. | |
| 102. |
Hereditary characteristics are passed on from parents to off spring chiefly through |
| A. | gametes |
| B. | enzymes |
| C. | genes |
| D. | centrosomes |
| Answer» B. enzymes | |
| 103. |
Mendel Laws of Heredity were rediscovered by |
| A. | Charles Darwin |
| B. | Lamark |
| C. | Devries correns and Tschermark |
| D. | Morgan |
| Answer» D. Morgan | |
| 104. |
Genetics is the study of- |
| A. | Inheritance |
| B. | Cell structure |
| C. | Only plants |
| D. | Only animals |
| Answer» B. Cell structure | |
| 105. |
In human beings, a recessive gene can express it in homozygous condition as in |
| A. | Autosome |
| B. | X-chromosome of male |
| C. | X-Chromosome of females |
| D. | An autosome or X-Chromosome |
| Answer» B. X-chromosome of male | |
| 106. |
State 'T' for True option and F for False option and choose the correct option at the endA. We have a single pair of sex chromosomes in all cells.B. Autosomes are 22 pairs of chromosomes.C. The human karyotype represents the pair of chromosome in a cellD. There are 46 Chromosomes as autosomes. |
| A. | TFTF |
| B. | TTTF |
| C. | TFFF |
| D. | TTFF |
| Answer» C. TFFF | |
| 107. |
The sex of the child in humans primarily depends on |
| A. | X chromosome of female part |
| B. | X and Y chromosome of male part |
| C. | Both [a] & [b] |
| D. | None of the two |
| Answer» C. Both [a] & [b] | |
| 108. |
Variation can be brought about by |
| A. | sexual reproduction |
| B. | copying of DNA |
| C. | adjusting with environment |
| D. | All of the above |
| Answer» E. | |
| 109. |
Assertion [A]: In human beings, the female play a major role in determining the sex of the offspring. Reason (R): Women have two X-chromosomes. [IAS] |
| A. | Both A and R are true and R is the correct explanation of A |
| 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» E. | |
| 110. |
Which one of the following genetic disease is sex-linked? [IAS] |
| A. | Royal haemophilia |
| B. | Tay-Sachs disease |
| C. | Cystic fibrosis |
| D. | Hypertension |
| Answer» B. Tay-Sachs disease | |
| 111. |
Number of chromosome in a normal human body cell is [SSC] |
| A. | 43 |
| B. | 44 |
| C. | 45 |
| D. | 46 |
| Answer» E. | |
| 112. |
Which one of the following techniques can be used to establish the paternity of a child I? [IAS] |
| A. | Protein analysis |
| B. | Quantitative analysis of DNA |
| C. | Chromosome counting |
| D. | DNA fingerprinting |
| Answer» E. | |
| 113. |
Which one of the following statements is correct? Cretinism is a human disorder which is due to the under secretion of: [NDA] |
| A. | Adrenalin hormone |
| B. | Cortisone hormone |
| C. | Glucagon hormone |
| D. | Thyroxin hormone |
| Answer» E. | |
| 114. |
Which one of the following is a hereditary disease? [NDA] |
| A. | Cataract |
| B. | Haemophilia |
| C. | Pellagra |
| D. | Osteoporosis |
| Answer» C. Pellagra | |
| 115. |
All these are fodder crops except |
| A. | mustard oil |
| B. | berseem |
| C. | oats |
| D. | sudan grass |
| Answer» D. sudan grass | |
| 116. |
Which one of the following is an Italian bee variety? |
| A. | Apis mellifera |
| B. | Apis dorsata |
| C. | Apis florae |
| D. | Apis cerana indica |
| Answer» B. Apis dorsata | |
| 117. |
Kranti, Pusa Agami and Pusa Bold are improved varieties |
| A. | Urad bean |
| B. | Sunflower |
| C. | Chick Pea |
| D. | Mustard |
| Answer» E. | |
| 118. |
Nitrogen, Phosphorus, Potassium are examples of |
| A. | micro-nutrients |
| B. | macronutrients |
| C. | fertilizer |
| D. | both [a] and [b] |
| Answer» C. fertilizer | |
| 119. |
Consider the following statements about probiotic food: [IAS Prelim] 1. Probiotic food contains live bacteria which are considered beneficial to humans. 2. Probiotic food helps in maintaining gut flora. Which of the statements given above is/are correct? |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | neither 1 nor 2 |
| Answer» D. neither 1 nor 2 | |
| 120. |
Consider the following statements: [IAS Prelim] 1. Molasses is a by-product of sugar production process. 2. Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories. 3. Sugar can only be produced from sugarcane as the raw material. Which of these statements are correct? |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | 1, 2 and 3 |
| Answer» B. 2 and 3 | |
| 121. |
Which one among the following cattle breed produces highest amount of milk? [CDS] |
| A. | Brown Swiss |
| B. | Holstein |
| C. | Dutch belted |
| D. | Blaarkop |
| Answer» C. Dutch belted | |
| 122. |
Which one of the following plants is used for green manuring in India? [CDS] |
| A. | Wheat |
| B. | Sunnhemp |
| C. | Cotton |
| D. | Rice |
| Answer» C. Cotton | |
| 123. |
Which among the following oils has the maximum protein content? [CDS] |
| A. | Castor oil |
| B. | Sunflower oil |
| C. | Soyabean oil |
| D. | Safflower oil |
| Answer» B. Sunflower oil | |
| 124. |
Crop rotation is carried out for |
| A. | increasing acidity of soil |
| B. | decreasing fertility of soil |
| C. | increasing fertility of soil |
| D. | all the above |
| Answer» D. all the above | |
| 125. |
Which one of the following plants is preferred for mixed cropping in order to enhance the bioavailability of nitrogen? [CDS] |
| A. | Wheat |
| B. | Gram |
| C. | Maize |
| D. | Barley |
| Answer» C. Maize | |
| 126. |
Which of these is incorrect statement in regard to factors for the cause of crop variety improvement |
| A. | Higher & improved Quality yield. |
| B. | Resistance of Biotic & non-biotic agents. |
| C. | Desirable traits and wider availability. |
| D. | Reaction with the dyes. |
| Answer» E. | |
| 127. |
State 'T' for True and 'F' for false statements and then choose the correct option.A. Hybridisation is always useful to obtain a better yield.B. Good fertilizers should be used by farmers.C. Only macro nutrients are enough for plants.D. Farmers should depend upon good irrigation method for watering crops. |
| A. | FFTT |
| B. | FTFT |
| C. | TFTF |
| D. | TTFF |
| Answer» C. TFTF | |
| 128. |
Find out the false statement: |
| A. | Poultry farming is related with rearing of domestic fowls. |
| B. | Marine fish capture is guided by eco sounders and satellites |
| C. | In rainy season, Rabi crops are grown |
| D. | All of these |
| Answer» D. All of these | |
| 129. |
Column I Column IIA.Cattle used for tilling and cartingP.Milk producing femaleB.Indian breed of chickenQ.BroilerC.Sahiwal, Red SindhiR.Drought animalsD.MilchS.Local breed of cattleE.Chicken better fed for obtaining meatT.Aseel |
| A. | A-P; B-Q; G-R; D-S; E-T |
| B. | A-R; B-T; C-S; D-P; E-Q |
| C. | A-S; B-Q; C-S; D-R; E-T |
| D. | A-S; B-Q; C-R; D-P; E-T |
| Answer» C. A-S; B-Q; C-S; D-R; E-T | |
| 130. |
An example of a common herbicide is A. 2, 4 - D (2 - 4, dichlorophenoxyacetic acid). B. DDT (dichloro dimelhyl tri phenolic acid) C. BHC (benzene hexa chloride) D. Atrazine. |
| A. | A & B |
| B. | A & C |
| C. | A & D |
| D. | All of these |
| Answer» D. All of these | |
| 131. |
He is known as an Architect of green revolution |
| A. | Dr. Norman E Borlaug. |
| B. | Dr. Radha Krishnan |
| C. | Dr. A.P.J. Kalam |
| D. | M.S. Swaminathan |
| Answer» E. | |
| 132. |
Weeds can be controlled by A. mechanical removal B. inter cropping & crop rotation C. Eco friendly weedicide (chemicals) D. proper seedbed preparation. |
| A. | A, B, C |
| B. | B, C, D |
| C. | A, C |
| D. | all of these |
| Answer» E. | |
| 133. |
Nutritional diet of poultry birds includes |
| A. | cereals, oil cakes, milk cakes, green vegetables |
| B. | millets, proteins, oil cakes only |
| C. | cereals, millets , proteins, oil cakes, green vegetables |
| D. | proteins, oil cakes, cereals only |
| Answer» D. proteins, oil cakes, cereals only | |
| 134. |
Number of queens in a hive is |
| A. | 20 |
| B. | 15 |
| C. | 20 |
| D. | 1 |
| Answer» E. | |
| 135. |
Which one of the following is an improved variety of wheat? |
| A. | A.77 |
| B. | Sonalika |
| C. | Chandramukhi |
| D. | Kuber |
| Answer» C. Chandramukhi | |
| 136. |
Find out the correct sentence about manure A. Manure contains large quantities of organic matter and small quantities of nutrients B. It increases the water holding capacity of sandy soil. C. It helps in draining out of excess of water from clayey soil. D. Its excessive use pollutes environment because it is made of animal exretory waste. |
| A. | A and C |
| B. | A and B |
| C. | B and C |
| D. | C and D |
| Answer» C. B and C | |
| 137. |
Column I (Mineral) Column II (Source)A.HP.waterB.C & OQ.airC.BR.macro nutrientD.CaS.micro nutrient |
| A. | A-P; B-Q; C-R; D-S |
| B. | A-P; B-Q; C-S; D-R |
| C. | A-Q; B-P; C-R; D-S |
| D. | A-S; B-R; C-Q; D-P |
| Answer» C. A-Q; B-P; C-R; D-S | |
| 138. |
Column I (Food) Column II (Content) A. cereals P. fats B. pulses Q. vitamins and minerals C. oil seeds R. proteins D. fruits & spices S. carbohydrates |
| A. | A-P; B-Q; C-R; D-S |
| B. | A-S; B-C; C-Q; D-P |
| C. | A-S; B-R; C-P; D-Q |
| D. | A-Q; B-P; C-R; D-S |
| Answer» D. A-Q; B-P; C-R; D-S | |
| 139. |
Column I Column IIA.Rock beeP.Exotic fishB.Silver carpQ.Marine fishC.Bombay duckR.CarpD.Rohu and CatlaS.Apis dorsata |
| A. | A-P; B-Q; C-R; D-S |
| B. | A-P; B-R; C-Q; D-S |
| C. | A-S; B-P; C-Q; D-R |
| D. | A-S; B-Q; C-R; D-P |
| Answer» D. A-S; B-Q; C-R; D-P | |
| 140. |
Column I Column IIA.Marine fishP.Carp cultureB.Fresh water fishQ.ApicultureC.Bee KeepingR.MaricultureD.Composite fishS.aquaculture |
| A. | A-R; B-S; C-Q; D-P |
| B. | A-P; B-R; C-Q; D-S |
| C. | A-S; B-Q; C-P; D-R |
| D. | A-S; B-Q; C-R; D-P |
| Answer» B. A-P; B-R; C-Q; D-S | |
| 141. |
Which of the following will result in loss of soil fertility? A. Crop rotation B. Shifting; cultivation C. Excessive use of chemical fertilizers |
| A. | Only A and B |
| B. | Only A and C |
| C. | Only B and C |
| D. | A, B and C |
| Answer» D. A, B and C | |
| 142. |
Which of the following rotation of crops will reduce dependence on the use of chemical fertilizers? |
| A. | Rice and Chilli |
| B. | Wheat and Potato |
| C. | Potato and Rice |
| D. | Gram and Rice |
| Answer» E. | |
| 143. |
______ is not a natural insecticide. |
| A. | Neem |
| B. | khapra beetle |
| C. | Nicotine |
| D. | pyrethrum |
| Answer» E. | |
| 144. |
The uses of honey is/are in |
| A. | making medicines |
| B. | in making waxes |
| C. | generating money |
| D. | all the above. |
| Answer» E. | |
| 145. |
This is not a biotic agent for oiling crops. |
| A. | rodents |
| B. | moisture |
| C. | insects |
| D. | fungi |
| Answer» C. insects | |
| 146. |
Dams are used for A. irrigation B. stopping the rainwater from flowing away. C. decreasing chances of soil erosion. D. increasing ground water level. |
| A. | A, B & C |
| B. | B, C & D |
| C. | A, C & D |
| D. | all these. |
| Answer» E. | |
| 147. |
The principal cereal crop in India is |
| A. | wheat |
| B. | rice |
| C. | maize |
| D. | sorghum |
| Answer» C. maize | |
| 148. |
The cheapest high energy fruit crop of India is |
| A. | Banana |
| B. | Guava |
| C. | Apple |
| D. | Mango |
| Answer» B. Guava | |
| 149. |
The remains of mummies denote |
| A. | The kind of preservative technique in that era |
| B. | Evolutionary reveal |
| C. | Historical reveals |
| D. | All of the above |
| Answer» E. | |
| 150. |
Consider the following statements : A. Life can originate on earth from pre-existing life only. B. The atmosphere of the primitive earth was reducing. 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» D. Neither A nor B | |