MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
*/*_All food chains starts with __________ and ends with decay.? |
| A. | Environment |
| B. | Organisms |
| C. | Photosynthesis |
| D. | Fungi |
| Answer» D. Fungi | |
| 2. |
*/*_Organisms having the potential for interbreeding and producing fertile offspring is called? |
| A. | Class |
| B. | Order |
| C. | Genus |
| D. | Species |
| Answer» E. | |
| 3. |
*/*_When human body is infected by infection __________ type of cells are activated to defend the body.? |
| A. | erythrocytes |
| B. | leukocytes |
| C. | lymphocytes |
| D. | monocytes |
| Answer» D. monocytes | |
| 4. |
*/*_The first tropic level refers to? |
| A. | all herbivores |
| B. | all green plants |
| C. | sunlight |
| D. | all animals |
| Answer» C. sunlight | |
| 5. |
*/*_Biodiversity? |
| A. | Increases towards the equator |
| B. | Decreases towards the equator |
| C. | Remains same throughout the planet |
| D. | Has no effect on change in latitude |
| Answer» B. Decreases towards the equator | |
| 6. |
*/*_Ultraviolet radiation which is not lethal but harm to the organism is? |
| A. | 0.1 to 0.28 |
| B. | 0.28-0.32 |
| C. | 0.32-0.4 |
| D. | 0.4-0.5 |
| Answer» C. 0.32-0.4 | |
| 7. |
*/*_Snow leopard is found in which National Park?? |
| A. | Kaziranga |
| B. | The Great Himalayan |
| C. | Bharatpur |
| D. | Nagarhole |
| Answer» C. Bharatpur | |
| 8. |
*/*_Water from springs contain dissolved __________ compounds which are used to cure some skin diseases.? |
| A. | Nitric |
| B. | Carbon |
| C. | Oxide |
| D. | Sulphur |
| Answer» E. | |
| 9. |
*/*_The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemisphere is that:? |
| A. | The earth is closer to the sun in January |
| B. | The earth is farther from the sun in July |
| C. | Over 80% of the Southern Hemisphere is covered with water |
| D. | The sun's energy is less intense in the Southern Hemisphere |
| Answer» D. The sun's energy is less intense in the Southern Hemisphere | |
| 10. |
*/*_Macroconsumers include? |
| A. | Herbivores |
| B. | Carnivores |
| C. | Omnivores |
| D. | All the above |
| Answer» E. | |
| 11. |
*/*_The supersonic jets cause pollution by the thinning of? |
| A. | CO2 layer |
| B. | SO2 layer |
| C. | O3 layer |
| D. | O2 layer |
| Answer» D. O2 layer | |
| 12. |
*/*_Renewable energy resources are mostly based on? |
| A. | biomass |
| B. | fossil fuels |
| C. | nuclear power |
| D. | nuclear power |
| Answer» B. fossil fuels | |
| 13. |
*/*_At what time of day is the relative humidity normally at a minimum?? |
| A. | When the air temperature is highest |
| B. | Just before sunrise |
| C. | About midnight |
| D. | When the air temperature is lowest |
| Answer» B. Just before sunrise | |
| 14. |
*/*_Eutrophication results from? |
| A. | Agricultural and sewage water |
| B. | Vehicle exhaust |
| C. | Pesticides |
| D. | Industrial effluents |
| Answer» B. Vehicle exhaust | |
| 15. |
*/*_Gas released during photosynthesis is? |
| A. | Methane |
| B. | Nitrogen |
| C. | Oxygen |
| D. | Carbon dioxide |
| Answer» D. Carbon dioxide | |
| 16. |
*/*_Which of the following interactions will not promote co evolution?? |
| A. | Commensalism |
| B. | Mutualism |
| C. | Parasitism |
| D. | Interspecific competition |
| Answer» B. Mutualism | |
| 17. |
*/*_The term Ecosystem was coined by? |
| A. | Odum |
| B. | Clements |
| C. | Arthur G Tansley |
| D. | Elton |
| Answer» D. Elton | |
| 18. |
*/*_At night, low clouds:? |
| A. | Enhance the atmospheric greenhouse effect |
| B. | Weaken the atmospheric greenhouse effect |
| C. | Are often caused by the atmospheric greenhouse effect |
| D. | Have no effect on the atmospheric greenhouse effect |
| Answer» B. Weaken the atmospheric greenhouse effect | |
| 19. |
*/*_Basidiospores are considered to be a major source of? |
| A. | airborne allergens |
| B. | water borne allergens |
| C. | animal faeces |
| D. | bioweapon |
| Answer» B. water borne allergens | |
| 20. |
*/*_The earth's atmosphere is divided into layers based on the vertical profile of:? |
| A. | Air pressure |
| B. | Air temperature |
| C. | Air density |
| D. | Wind speed |
| Answer» C. Air density | |
| 21. |
*/*_What is hibernation and aestivation?? |
| A. | Thermal adaptation shown by animals |
| B. | wind adaptation shown by animals |
| C. | adaptation of animals to escape from predators |
| D. | none |
| Answer» B. wind adaptation shown by animals | |
| 22. |
*/*__________ are used for converting saline or brackish water into pure distilled water.? |
| A. | Photo voltaic cells |
| B. | Solar desalination systems |
| C. | Solar cookers |
| D. | Solar water-heating |
| Answer» C. Solar cookers | |
| 23. |
*/*_The Expansion of SPCA? |
| A. | Society for the Protection of Common Animals |
| B. | Society for the Prevention of Cruelty to Animals |
| C. | Society for the Prohibition of Cruelty to Animals |
| D. | None |
| Answer» C. Society for the Prohibition of Cruelty to Animals | |
| 24. |
*/*_Autotrophs are ______________? |
| A. | Consumers |
| B. | Herbivores |
| C. | Saprophytes |
| D. | Producers |
| Answer» E. | |
| 25. |
*/*_What is lotic habitat?? |
| A. | Standing or still water habitat |
| B. | Marine habitat |
| C. | Running water habitat |
| D. | Stagnant water |
| Answer» D. Stagnant water | |
| 26. |
*/*_Which sea is referred to as an oceanic desert?? |
| A. | Red Sea |
| B. | Sargasso Sea |
| C. | Arabian Sea |
| D. | Sea of Japan |
| Answer» C. Arabian Sea | |
| 27. |
*/*_Harmful trace metals in fly ash:? |
| A. | antimony |
| B. | cadmium |
| C. | arsenic |
| D. | all of the above |
| Answer» E. | |
| 28. |
*/*_The species that flower are called? |
| A. | gymnosperms |
| B. | bryophytes |
| C. | angiosperms |
| D. | algae |
| Answer» D. algae | |
| 29. |
*/*_Ramsar Convention refers to the conservation of ____________? |
| A. | Deserts |
| B. | Wetlands |
| C. | Agriculture lands, |
| D. | Forest land |
| Answer» C. Agriculture lands, | |
| 30. |
*/*_The state which constituted green bench? |
| A. | Kerala |
| B. | Tamilnadu |
| C. | Assam |
| D. | Madhya Pradesh |
| Answer» C. Assam | |
| 31. |
*/*_An example of nitrogen fixing bacteria in the soil? |
| A. | Rhizobium |
| B. | Nostoc |
| C. | Azotobacter |
| D. | Nitrobacter |
| Answer» D. Nitrobacter | |
| 32. |
*/*_Soil pollution is caused by? |
| A. | Aerosol |
| B. | Ozone |
| C. | Acid rain |
| D. | PAN |
| Answer» D. PAN | |
| 33. |
*/*_Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such altitudes, the Tibetans are above roughly:? |
| A. | 10% of the air molecules in the atmosphere |
| B. | 25% of the air molecules in the atmosphere |
| C. | 50% of the air molecules in the atmosphere |
| D. | 75% of the air molecules in the atmosphere |
| Answer» D. 75% of the air molecules in the atmosphere | |
| 34. |
*/*_Thickness of plastic cover permissible to use? |
| A. | 50 Microns |
| B. | 20 Microns |
| C. | 100 Microns |
| D. | 10 Microns |
| Answer» D. 10 Microns | |
| 35. |
*/*_In which year Silent Valley was declared as National Park?? |
| A. | 1988 |
| B. | 1982 |
| C. | 1984 |
| D. | 1981 |
| Answer» D. 1981 | |
| 36. |
*/*_The water management Act is complemented by the waste water charges Act at? |
| A. | 34641 |
| B. | 14631 |
| C. | 35277 |
| D. | 36059 |
| Answer» B. 14631 | |
| 37. |
*/*_Which one of the following is the non-renewable resource?? |
| A. | Water |
| B. | Oxygen |
| C. | Sunlight |
| D. | Coal |
| Answer» E. | |
| 38. |
*/*_As the difference between the air temperature and the dew point increases, the relative humidity:? |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant at a value less than 100% |
| D. | Remains constant and equal to 100% |
| Answer» C. Remains constant at a value less than 100% | |
| 39. |
%_Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such altitudes, the Tibetans are above roughly:_% |
| A. | 10% of the air molecules in the atmosphere |
| B. | 25% of the air molecules in the atmosphere |
| C. | 50% of the air molecules in the atmosphere |
| D. | 75% of the air molecules in the atmosphere |
| Answer» D. 75% of the air molecules in the atmosphere | |
| 40. |
%_In which year Silent Valley was declared as National Park?_% |
| A. | 1988 |
| B. | 1982 |
| C. | 1984 |
| D. | 1981 |
| Answer» D. 1981 | |
| 41. |
%_Thickness of plastic cover permissible to use_% |
| A. | 50 Microns |
| B. | 20 Microns |
| C. | 100 Microns |
| D. | 10 Microns |
| Answer» D. 10 Microns | |
| 42. |
%_The Anthrax disease is caused by_% |
| A. | Virus |
| B. | Bacteria |
| C. | Protozoa |
| D. | Helminthes |
| Answer» C. Protozoa | |
| 43. |
%_All are physical pollutants except_% |
| A. | heat |
| B. | sound |
| C. | radiations |
| D. | soot |
| Answer» E. | |
| 44. |
%_The book silent spring was written by_% |
| A. | Madhav Gadgil |
| B. | Anil Agarwal |
| C. | Rachel Carson |
| D. | E.O.Wilson |
| Answer» D. E.O.Wilson | |
| 45. |
%_In an aquatic ecosystem, the tropic level equivalent to cows in grasslands is_% |
| A. | Nekton |
| B. | Zooplankton |
| C. | Phytoplankton |
| D. | Benthos |
| Answer» C. Phytoplankton | |
| 46. |
%_The unit of pressure most commonly found on a surface weather map is:_% |
| A. | Inches of mercury (Hg) |
| B. | Millibars or hectopascals |
| C. | Pounds per square inch |
| D. | Millimeters of mercury (Hg) |
| Answer» C. Pounds per square inch | |
| 47. |
%_A biodegradable plastic developed by Biopak Corporation Australia_% |
| A. | Biopol |
| B. | Pet |
| C. | Polyester |
| D. | PVC |
| Answer» B. Pet | |
| 48. |
%_MAB program stands for_% |
| A. | Man and biotechnology |
| B. | Material and biology |
| C. | Man and Biology |
| D. | Man and Biosphere |
| Answer» E. | |
| 49. |
%_Abbreviation for NGO is_% |
| A. | non-governmental office |
| B. | national-geographical organization |
| C. | national-governmental organization |
| D. | non-governmental organization |
| Answer» E. | |
| 50. |
%_The green house gases, otherwise called radioactively active gases includes_% |
| A. | Carbon dioxide |
| B. | CH4 |
| C. | N2O |
| D. | All of these |
| Answer» E. | |