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.
| 3051. |
Name the natural phenomenon responsible for heating of earth’s surface and atmosphere? |
| A. | Global warming |
| B. | Green house effect |
| C. | Eutrophication |
| D. | Aforestation |
| Answer» C. Eutrophication | |
| 3052. |
What is the major problem of using nuclear energy? |
| A. | Accidental leakage |
| B. | It is very costly |
| C. | Safe Disposal |
| D. | Both A and C |
| Answer» E. | |
| 3053. |
What is correct for the region labeled as a,b,c and d? |
| A. | a- CO2 60% ,b- CH4 20% , c- CFC 14% ,d-N2O 6% |
| B. | a- CFC60% ,b- CH4 20% , c- CO2 14% ,d-N2O 6% |
| C. | a- CFC60% ,b- CO2 20% , c- CH4 14% ,d-N2O 6% |
| D. | a- CFC60% ,b- CH4 20% , c- N2O 14% ,d- CO2 6% |
| Answer» B. a- CFC60% ,b- CH4 20% , c- CO2 14% ,d-N2O 6% | |
| 3054. |
In which part of atmosphere degradation of ozone takes place? |
| A. | Troposphere |
| B. | Stratosphere |
| C. | Thermosphere |
| D. | Ozonosphere |
| Answer» C. Thermosphere | |
| 3055. |
What is snow blindness? |
| A. | Can not see due to Cataract |
| B. | Cannot see in the snow |
| C. | Inflammation of cornea |
| D. | Inflammation of eyeball |
| Answer» D. Inflammation of eyeball | |
| 3056. |
Heavy metals can be defined as elements with density… |
| A. | >5g/cm3 |
| B. | <5g/cm3 |
| C. | <5g/m3 |
| D. | >5g/cm3 |
| Answer» B. <5g/cm3 | |
| 3057. |
Who created the Haryana Welfare Club? |
| A. | Ramesh Dagar |
| B. | Sunderlal Bahuguna |
| C. | Ahmad Khan |
| D. | Suresh Dagar |
| Answer» B. Sunderlal Bahuguna | |
| 3058. |
Eichornia is a… |
| A. | Desert plant |
| B. | Water plant |
| C. | Terrestrial plant |
| D. | Parasitic plant |
| Answer» C. Terrestrial plant | |
| 3059. |
In which form earth ‘s surface reemits heat? |
| A. | UV radiation |
| B. | Infrared radiation |
| C. | Gamma rays |
| D. | rays |
| Answer» E. | |
| 3060. |
Soil conservation can be best achieved by having … |
| A. | Wind screen |
| B. | Good plant cover |
| C. | Restricted human activity |
| D. | Low rain fall |
| Answer» C. Restricted human activity | |
| 3061. |
Name the community known for its peaceful coexistence with nature? |
| A. | Bishnoi |
| B. | Bikaneries |
| C. | Krishnoi |
| D. | Jhodhapuries |
| Answer» B. Bikaneries | |
| 3062. |
Which gases are commonly known as green house gases? |
| A. | CO2 & CH4 |
| B. | CO2 & NH4 |
| C. | CO & N2 |
| D. | NH4, CO ,SO2 |
| Answer» B. CO2 & NH4 | |
| 3063. |
Match the column I and column II |
| A. | b a c d e |
| B. | a c b d e |
| C. | a c d b e |
| D. | b c e d a |
| Answer» B. a c b d e | |
| 3064. |
Which of the following is not causing pollution? |
| A. | Thermal power plant |
| B. | Nuclear power plant |
| C. | Automobiles |
| D. | Hydroelectric power plant |
| Answer» E. | |
| 3065. |
Which atoms are released by the action of UV rays on CFC? |
| A. | O |
| B. | C |
| C. | Fl |
| D. | Cl |
| Answer» E. | |
| 3066. |
What I the result of El Nino Effect? |
| A. | Melting of polar icecap |
| B. | Rise in sea level |
| C. | Melting of Himalayan snow caps |
| D. | All of these |
| Answer» E. | |
| 3067. |
Which structure pushes the developing embryo toward endosperm to get nutrition ? |
| A. | Hypophysi |
| B. | Terminal octant |
| C. | Proembryo |
| D. | Suspensor |
| Answer» E. | |
| 3068. |
Match Column-I and Column-II correctly and choose the right answer. |
| A. | P-ii, Q-iv, R-iii, S-i |
| B. | P-ii, Q-iv, R-i, S-iii |
| C. | P-iii, Q-i, R-ii, S-iv |
| D. | P-iv, Q-iii, R-ii, S-i |
| Answer» C. P-iii, Q-i, R-ii, S-iv | |
| 3069. |
A genetically engineered microorganism used successfully in biomediation of oil spillg is species of (CBSE-2007) |
| A. | Trichoderma |
| B. | Xamthomonas |
| C. | Bacillus |
| D. | Pseudomonas |
| Answer» D. Pseudomonas | |
| 3070. |
There are set of health care products. Match them with organisms which are genetically engineered for respective products. |
| A. | 5 4 1 2 |
| B. | 5 1 1 4 |
| C. | 5 3 4 1 |
| D. | 5 4 3 2 |
| Answer» B. 5 1 1 4 | |
| 3071. |
Which is the most common Plasmid used for most of genetically engineered product ? |
| A. | PBR322 |
| B. | R Plasmid types |
| C. | CaMV195 |
| D. | both a and b |
| Answer» E. | |
| 3072. |
Which cells provides nutrition to the sperms ? |
| A. | Germinal cell |
| B. | Epithelial cell |
| C. | Sertoli cell |
| D. | None of them |
| Answer» D. None of them | |
| 3073. |
Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) Biodegradable waste (i) Bottles,cans,metals_ans_key_(Q) Nonbiodegradable waste (ii) Domestic waste,cow dung_ans_key_(R) Recyclable waste (iii) Mercury,DDT |
| A. | (p-iii) (,q-ii),(r-i) |
| B. | (p-ii),(q-i),(r-iii) |
| C. | (p-ii),(q-iii),(r-i ) |
| D. | (p-i),(q-ii),(r-iii) |
| Answer» C. (p-ii),(q-iii),(r-i ) | |
| 3074. |
Green house effect is due to..… AMU2001 |
| A. | Higher CO2 concentration |
| B. | Absorption of infrared rays by gases & dust particles |
| C. | Ratification of atmosphere |
| D. | Both B & C |
| Answer» E. | |
| 3075. |
Which unit is used for measuring thickness of ozone layer? AIIMS2009 |
| A. | P |
| B. | DU |
| C. | RA. |
| Answer» C. RA. | |
| 3076. |
. For the given statement which option is correct? _ans_key_Statement:_ans_key_(X) Polyblend is a fine powder of recycled modified plastic._ans_key_(Y) In Bangalore roads are made of mixture of Polyblend and bitumen which increases Strength of the road. |
| A. | Both X and Y are correct.Y gives correct explanation for X |
| B. | Both X and Y are correct.Y does not give correct explanation for X |
| C. | X is correct, Y is wrong |
| D. | X is wrong and Y is correct |
| Answer» B. Both X and Y are correct.Y does not give correct explanation for X | |
| 3077. |
Green house effect is caused by… AFMC2002 |
| A. | Green plant |
| B. | Infra red rays |
| C. | Uv rays |
| D. | X-rays |
| Answer» C. Uv rays | |
| 3078. |
Reason for ozone hole is KCET2001 |
| A. | Increased UV radiation |
| B. | Green house effect |
| C. | Global warming |
| D. | Acid rain |
| Answer» B. Green house effect | |
| 3079. |
The foods made from genetically modified crops required to Pass human testing because |
| A. | they may cause allergie |
| B. | they may alter genes |
| C. | they may cause mutations and release toxins |
| D. | all above |
| Answer» E. | |
| 3080. |
Match the items given in column I and II KeralaPMT2011_ans_key_Column-1 Column-II_ans_key_(P) Electrostatic precipitator (i) Removes gases like SO2_ans_key_(Q) Scrubber (ii) Removes impurities from exhaust of vehicles_ans_key_(R) Catalytic converter (iii) Removes particulate matter |
| A. | (p-i) ,(q-ii),(r-iii) |
| B. | (p-iii),(q-i),(r-ii) |
| C. | (p-iii),(q-ii),(r-i ) |
| D. | (p-ii),(q-i),(r-iii) |
| Answer» C. (p-iii),(q-ii),(r-i ) | |
| 3081. |
Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) Global warming (i) Mercury,DDT_ans_key_(Q) Eutrophication (ii) Rise in sea level_ans_key_(R) Biological magnification (iii) CH4,CO2_ans_key_(S) Green house effect (iv) Algal bloom |
| A. | (p-iv), (q-i),(r-ii) ,(s-iii) |
| B. | ( p-i), (q-ii) ,(r-iii), (s-iv) |
| C. | (p-ii), (q-iii), (r-I), (s-iv) |
| D. | (p-ii), (q-iv), (r-i), (s-iii) |
| Answer» E. | |
| 3082. |
Ozone depletion in the stratosphere will cause .. AIMS1992 |
| A. | Increased incidence of skin cancer |
| B. | Forest fire |
| C. | Global warming |
| D. | None of these |
| Answer» B. Forest fire | |
| 3083. |
As it travels along the food chain the concentration of DDT.. KCET2001 |
| A. | Increase |
| B. | Stays constant |
| C. | Decreases |
| D. | Fluctuates randomly. |
| Answer» B. Stays constant | |
| 3084. |
Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) 1988 (i) Noise pollution added in Air act_ans_key_(Q) 1974 (ii) Concept of joint forest management_ans_key_(R) 1980 (iii) Chipako movement_ans_key_(S) 1987 (iv) Natoinal Forest policy |
| A. | (p-iv), (q-iii), (r-i), (s-ii) |
| B. | ( p-i), (q-ii) ,(r-iii), (s-iv) |
| C. | (p-iv), (q-iii),(r-ii) ,(s-i) |
| D. | (p-ii), (q-iv), (r-i), (s-iii) |
| Answer» D. (p-ii), (q-iv), (r-i), (s-iii) | |
| 3085. |
In the coming year skin related disorders might be more common due to … |
| A. | Use of detergent |
| B. | Water pollution |
| C. | Depletion of ozone layer |
| D. | Air pollution CBSE1997 |
| Answer» D. Air pollution CBSE1997 | |
| 3086. |
How can we control global warming? |
| A. | By reducing the use of fossil fuel |
| B. | Aforestation |
| C. | By slowing down the growth of human population |
| D. | All of these |
| Answer» E. | |
| 3087. |
How much forest area is lost in tropics and temperate regions respectively? |
| A. | 40%, 1% |
| B. | 1%, 40% |
| C. | 33%,40% |
| D. | 40$,33% |
| Answer» B. 1%, 40% | |
| 3088. |
Match the items given in _ans_key_column I and II_ans_key_Column-1 Column-II_ans_key_(P) Catalytic converter (i) Cl_ans_key_(Q) Scrubber (ii) CO &Nitrogen oxide_ans_key_(R) Polyblend (iii) SO2_ans_key_(S) Freon (iv) Plastic |
| A. | (p-ii), (q-iii), (r-iv), (s-i) |
| B. | ( p-i), (q-ii) ,(r-iii), (s-iv) |
| C. | (p-ii), (q-iii), (r-I), (s-iv) |
| D. | (p-iv), (q-i),(r-ii) ,(s-iii) |
| Answer» B. ( p-i), (q-ii) ,(r-iii), (s-iv) | |
| 3089. |
Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) CNG (i) Rhodium_ans_key_(Q) Ozone (ii) Db_ans_key_(R) Catalytic converter (iii) Du_ans_key_(S) Noise (iv) Non carcinogenic |
| A. | ( p-i), (q-ii) ,(r-iii), (s-iv) ) |
| B. | (p-iv), (q-iii), (r-i), (s-ii) |
| C. | (p-ii), (q-iii), (r-I), (s-iv) |
| D. | (p-iv), (q-i),(r-ii) ,(s-iii) |
| Answer» C. (p-ii), (q-iii), (r-I), (s-iv) | |
| 3090. |
Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) Water accumulation in potted plant (i) Chemical fertilizers_ans_key_(Q) Aquatic weed (ii) Mercury,DDT_ans_key_(R) Eutrophication (iii) Eichhornia_ans_key_(S) Nonbiodegradable (iv) Water logging |
| A. | (p-ii), (q-iv), (r-i), (s-iii) |
| B. | ( p-i), (q-ii) ,(r-iii), (s-iv) |
| C. | (p-iv), (q-iii),(r-ii) ,(s-i) |
| D. | (p-iv), (q-iii), (r-i), (s-ii) |
| Answer» E. | |
| 3091. |
What is the present scenario of deforestation in India as compared to beginning of twentieth century? |
| A. | Beginning of twentieth century 30%, now 19.4% |
| B. | Beginning of twentieth century 30% ,now 18.4% |
| C. | Beginning of twentieth century 33%, now 19.4% |
| D. | Beginning of twentieth century 23%, now 16.4% |
| Answer» B. Beginning of twentieth century 30% ,now 18.4% | |
| 3092. |
Eutrophicatico causes decrease in .. AIMS1996 |
| A. | Dissolved oxygen |
| B. | Dissolved salts |
| C. | Dissolved hydrogen |
| D. | All of these |
| Answer» B. Dissolved salts | |
| 3093. |
Ozone hole refers to… AFMC2001 |
| A. | Reduction in thickness of ozone layer in troposphere |
| B. | Reduction in thickness of ozone layer in stratosphere |
| C. | Hole in ozone layer in stratosphere |
| D. | Increased concentration of ozone |
| Answer» D. Increased concentration of ozone | |
| 3094. |
What should be the forest cover recommended by National Forest policy (1988)? |
| A. | 33% for the plains, 67%for the hills |
| B. | 40% for the plains, 60%for the hills |
| C. | 24% for the plains, 76%for the hills |
| D. | 23% for the plains, 77%for the hills |
| Answer» B. 40% for the plains, 60%for the hills | |
| 3095. |
The scientist who cut off the tails of mice of successive generations to prove Lamarck's theory was wrong was _____. |
| A. | Weismann |
| B. | Haeckel |
| C. | Darwin |
| D. | Wallace |
| Answer» B. Haeckel | |
| 3096. |
For the given statement which option is correct? _ans_key_Statement:_ans_key_(X) Air pollution causes injury to all living organisms._ans_key_(Y) The harmful effect depends on the concentration of pollutants, duration . |
| A. | Both X and Y are correct.Y gives correct explanation for X |
| B. | Both X and Y are correct.Y does not give correct explanation for X |
| C. | X is correct, Y is wrong |
| D. | X is wrong and Y is correct |
| Answer» B. Both X and Y are correct.Y does not give correct explanation for X | |
| 3097. |
For the given statement which option is correct?_ans_key_Statement:_ans_key_(X) Due to green revolution production of crop is more._ans_key_(Y) Water logging and soil salinity is the outcome of green revolution. |
| A. | Both X and Y are correct.Y gives correct explanation for X |
| B. | Both X and Y are correct.Y does not give correct explanation for X |
| C. | X is correct, Y is wrong |
| D. | X is wrong and Y is correct |
| Answer» B. Both X and Y are correct.Y does not give correct explanation for X | |
| 3098. |
Which of the following is responsible for protection of living organism on earth? |
| A. | Ozone layer |
| B. | Green house strategy |
| C. | Troposphere |
| D. | Uvrays |
| Answer» B. Green house strategy | |
| 3099. |
What is the rise in the temperature of earth since last three decades? |
| A. | 0.6° C |
| B. | 0.5° |
| C. | 6°C |
| D. | 5°C |
| Answer» B. 0.5° | |
| 3100. |
With respect to value of BOD, arrange the following in descending order._ans_key_i) Distilled water ii) Tap water_ans_key_iii)Industrial effluent iv)Sewage discharge in the river |
| A. | i– ii – iii - iv |
| B. | iii –iv – ii - i |
| C. | iv –iii – ii - i |
| D. | ii – I – iv – iii |
| Answer» C. iv –iii – ii - i | |