MCQOPTIONS
Saved Bookmarks
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. |
A group of individuals of a plant or animal species, inhabiting a given area is called |
| A. | iome |
| B. | opulation |
| C. | cosystem |
| D. | ommunity |
| Answer» C. cosystem | |
| 2. |
What is deep ecology? |
| A. | rotecting nature for its own sake |
| B. | cology of deep sea |
| C. | cology of forest |
| D. | cology of caves |
| Answer» B. cology of deep sea | |
| 3. |
Extensive planting of trees to increase forest cover is called |
| A. | fforestation |
| B. | groforestry |
| C. | eforestation |
| D. | ocial forestry |
| Answer» B. groforestry | |
| 4. |
Coal is a__________ resource. |
| A. | biotic |
| B. | norganic |
| C. | eforestation |
| D. | one of the above |
| Answer» D. one of the above | |
| 5. |
As it travels along the food chain, the concentration of DDT |
| A. | ncreases |
| B. | emains constant |
| C. | ecreases |
| D. | luctuates randomly |
| Answer» B. emains constant | |
| 6. |
The presence of high coliform counts in water indicates |
| A. | ontamination by human wastes |
| B. | hosphorus contamination |
| C. | ecreased Biological Oxygen Demand |
| D. | ydrocrbon contamination |
| Answer» B. hosphorus contamination | |
| 7. |
If the earth's average surface temperature were to increase, the amount of radiation emitted from the earth's surface would ____, and the wavelength of peak emission would shift toward ____ wavelengths. |
| A. | ncrease, shorter |
| B. | ncrease, longer |
| C. | ecrease, shorter |
| D. | ecrease, longer |
| Answer» B. ncrease, longer | |
| 8. |
As the air temperature increases, with no addition of water vapour to the air, the relative humidity will: |
| A. | emain the same |
| B. | ncrease |
| C. | ecrease |
| D. | ncrease until it becomes equal to the dew point temperature |
| Answer» E. | |
| 9. |
As the air temperature increases, with no addition of water vapor to the air, the dew point will: |
| A. | emain the same |
| B. | ncrease |
| C. | ecrease |
| D. | ncrease and become equal to the air temperature |
| Answer» B. ncrease | |
| 10. |
Average total rainfall is 100 - 150 cm in__________ , located in Australia, South America and Africa. |
| A. | ropical savannas |
| B. | haparrals |
| C. | eciduous forest |
| D. | emperate forest |
| Answer» C. eciduous forest | |
| 11. |
The movement "Beej Bachao Andolan" was aimed for the conservation of _______ |
| A. | rees |
| B. | hrubs |
| C. | rops |
| D. | oconut |
| Answer» D. oconut | |
| 12. |
Largest reptile in the world |
| A. | ragon |
| B. | naconda |
| C. | rocodile |
| D. | ython |
| Answer» C. rocodile | |
| 13. |
Hot spots are regions of high |
| A. | arity |
| B. | ndemism |
| C. | ritically endangered population |
| D. | iversity |
| Answer» C. ritically endangered population | |
| 14. |
Which of the following has the least similarity when comparing two examples of the same biome located in different parts of the world? |
| A. | limate |
| B. | atitude |
| C. | ontinent |
| D. | levation |
| Answer» D. levation | |
| 15. |
BOD of a river water is found very high. This means water |
| A. | s clear |
| B. | s highly polluted |
| C. | ontain Algae |
| D. | ontain many dissolved minerals |
| Answer» C. ontain Algae | |
| 16. |
Phytoplankton are |
| A. | roducers of forest |
| B. | roducers of lakes |
| C. | onsumers of Ocean |
| D. | mnivores |
| Answer» C. onsumers of Ocean | |
| 17. |
Organisms which depend on Producers for nutrition are called |
| A. | utotrophs |
| B. | aprophytes |
| C. | onsumers |
| D. | erophytes |
| Answer» D. erophytes | |
| 18. |
Earth summit of Rio de Janeiro (1992) resulted in |
| A. | ompilation of Red list |
| B. | stablishment of biosphere reserves |
| C. | onservation of biodiversity |
| D. | UCN |
| Answer» D. UCN | |
| 19. |
What is meant by ex-situ conservation? |
| A. | onservation of a species by protecting its habitat along with all other species living there |
| B. | onservation of forest eco system |
| C. | onservation of a species outside its natural habitat |
| D. | onservation of plants |
| Answer» D. onservation of plants | |
| 20. |
Temperate forests occur in India in |
| A. | ndo-gangetic plains |
| B. | imalayas |
| C. | astern India |
| D. | outhern peninsula |
| Answer» C. astern India | |
| 21. |
Which of the following is a biodiversity hot spots in India? |
| A. | estern Ghats |
| B. | andadevi |
| C. | astern Ghats |
| D. | ravalli |
| Answer» B. andadevi | |
| 22. |
Autecology deals with |
| A. | cology of species |
| B. | cology of many species |
| C. | cology of community |
| D. | ll the above |
| Answer» B. cology of many species | |
| 23. |
The complex network of interconnected food chains is called ___________ |
| A. | rophic level |
| B. | ood web |
| C. | cological pyramid |
| D. | cology chain |
| Answer» C. cological pyramid | |
| 24. |
The unfavourable alteration of environment due to human activities is termed as |
| A. | cological disturbance |
| B. | atastrophe |
| C. | cological degradation |
| D. | ollution |
| Answer» E. | |
| 25. |
The unit of total water content of the soil is known as |
| A. | olard |
| B. | hraserd |
| C. | chard |
| D. | ll of the above |
| Answer» B. hraserd | |
| 26. |
Which of the following is an extinct species? |
| A. | iger |
| B. | ion |
| C. | odo |
| D. | strich |
| Answer» D. strich | |
| 27. |
The processes of condensation and freezing: |
| A. | oth release sensible heat into the environment |
| B. | oth absorb sensible heat from the environment |
| C. | o not affect the temperature of their surroundings |
| D. | o not involve energy transport |
| Answer» B. oth absorb sensible heat from the environment | |
| 28. |
The formula for exponential population growth is |
| A. | N/dt = rN |
| B. | t/dN = rN |
| C. | N/rN = dt |
| D. | N/dN = dt |
| Answer» B. t/dN = rN | |
| 29. |
The percentage of water vapour present in the air compared to that required for saturation is the: |
| A. | ixing ratio |
| B. | bsolute humidity |
| C. | ew point |
| D. | elative humidity |
| E. | pecific humidity |
| Answer» E. pecific humidity | |
| 30. |
Which one of the following is the most stable ecosystem? |
| A. | orest |
| B. | ountain |
| C. | esert |
| D. | cean |
| Answer» E. | |
| 31. |
Which of the following determine the kind (wavelength) and amount of radiation that an object emits? |
| A. | emperature |
| B. | hermal conductivity |
| C. | ensity |
| D. | atent heat |
| Answer» B. hermal conductivity | |
| 32. |
_________ is the regulatory authority of quality in India. |
| A. | PCB |
| B. | CBC |
| C. | BCP |
| D. | PBC |
| Answer» B. CBC | |
| 33. |
The effect of ozone depletion include |
| A. | V light reaches the earth |
| B. | ffect the climate |
| C. | ause skin cancer |
| D. | ll the above |
| Answer» E. | |
| 34. |
The inherent ability of organisms to reproduce and multiply is called |
| A. | value |
| B. | iotic potential |
| C. | arrying capacity |
| D. | value |
| Answer» C. arrying capacity | |
| 35. |
Forests grow in high rain fall areas are |
| A. | ver green forests |
| B. | emperate forests |
| C. | onifers |
| D. | undra |
| Answer» B. emperate forests | |
| 36. |
The first trophic level in a food chain |
| A. | reen Plants |
| B. | erbivores |
| C. | arnivores |
| D. | acteria |
| Answer» B. erbivores | |
| 37. |
What is Carcinogen? |
| A. | rugs for curing infectious disease |
| B. | rugs used for curing cancer |
| C. | ancer causing agent |
| D. | ood colourants |
| Answer» D. ood colourants | |
| 38. |
Which country contains about 50% of the world's coal resources? |
| A. | nited States |
| B. | hina |
| C. | anada |
| D. | he former Soviet Union |
| Answer» E. | |
| 39. |
Evaporation is a _________ process. |
| A. | ooling |
| B. | eating |
| C. | an't tell - it depends on the temperature |
| D. | oth a and c |
| Answer» B. eating | |
| 40. |
Air pollution can be of |
| A. | atural origin |
| B. | rtificial or man made origin |
| C. | oth a and b |
| D. | only |
| Answer» D. only | |
| 41. |
If there is no atmosphere, the colour of the sky will be |
| A. | hite |
| B. | olourless |
| C. | lue |
| D. | lack |
| Answer» E. | |
| 42. |
In a population, unrestricted reproductive capacity is called as |
| A. | arrying capacity |
| B. | iotic potential |
| C. | irth rate |
| D. | ertility rate |
| Answer» C. irth rate | |
| 43. |
In the stratosphere, the air temperature normally: |
| A. | ecreases with increasing height |
| B. | ncreases with increasing height |
| C. | oth increases and decreases depending on the season |
| D. | annot be measured |
| Answer» C. oth increases and decreases depending on the season | |
| 44. |
Two objects, A and B, have the same mass but the specific heat of A is larger than B. If both objects absorb equal amounts of energy, |
| A. | will become warmer than B |
| B. | will become warmer than A |
| C. | oth A and B will warm at the same rate |
| D. | will get warmer, but B will get colder |
| Answer» C. oth A and B will warm at the same rate | |
| 45. |
Any unfavorable alteration of the environment may be called as |
| A. | utrophication |
| B. | nvironmental pollution |
| C. | iomagnigication |
| D. | ioaccumulation |
| Answer» C. iomagnigication | |
| 46. |
Which book written by Rachel Carson resulted in banning DDT in USA? |
| A. | ilent spring |
| B. | he environmentalism |
| C. | iomagnification |
| D. | ood chain |
| Answer» B. he environmentalism | |
| 47. |
Trichodermaharzianum has proved a useful microorganism for |
| A. | eclamation of wastelands |
| B. | ioremediation of contaminated soils |
| C. | iological control of soil-borne plant pathogens |
| D. | ene transfer in higher plants |
| Answer» C. iological control of soil-borne plant pathogens | |
| 48. |
Soil chemistry is considered an__________ factor |
| A. | opographic |
| B. | contonal |
| C. | iologic |
| D. | daphic |
| Answer» E. | |
| 49. |
Typically, water vapour occupies about what percentage of the air's volume near the earth's surface? |
| A. | bout 78 percent |
| B. | bout 21 percent |
| C. | lose to 10 percent |
| D. | ess than 4 percent |
| E. | one of these |
| Answer» E. one of these | |
| 50. |
Warming in the stratosphere is mainly caused by: |
| A. | bsorption of ultraviolet radiation by ozone |
| B. | elease of latent heat energy during condensation |
| C. | hemical reactions between ozone and chlorofluorocarbons |
| D. | rictional heating caused by meteorites |
| Answer» B. elease of latent heat energy during condensation | |