Environment & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
41. Which of the following methods can be helpful in preventing floods?
[A] Deforestation
[B] Afforestation
[C] Tilling of land
[D] Removing the top soil
Show Answer
Correct Answer: B [Afforestation]
Notes:
A flood is an overflow of water that submerges the low lying lands. Some of the reasons which are responsible for floods are deforestation, tilling of land, etc. Afforestation is a method that can be helpful in preventing floods.
42. Which of the following is a cryogenic storage facility used to archive biological samples for use in research and experiments?
[A] Gene banks
[B] Biobank
[C] Carbon credit
[D] Biocapacity
Show Answer
Correct Answer: B [Biobank]
Notes:
A cryogenic storage facility which is used to archive biological samples for use in research and experiments is known as Biobank. Biobanks are an important resource in medical research which support many types of contemporary research like genomics and personalized medicine.
43. Which of the following statements are correct regarding Earth Hour?
1. It is a global event which is organized by WWF.
2. On this day households and businesses turn off their non-essential lights and other electrical appliances for an hour to raise awareness towards the need to take action on climate change.
Select the correct option from the codes given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:
Earth Hour is a global event which is organized by WWF. On this day households and businesses turn off their non-essential lights and other electrical appliances for an hour to raise awareness towards the need to take action on climate change.
44. Which of the following is a vehicle that doesn’t emit tailpipe pollutants from the onboard source of power?
[A] BS VI vehicles
[B] Electric Vehicles
[C] ZEV vehicles
[D] Power vehicles
Show Answer
Correct Answer: C [ZEV vehicles]
Notes:
Zero emission vehicles which are also called as ZEV’s are those vehicles that do not emit any tailpipe pollutants such as carbon monoxide, carbon dioxide from the onboard source of power.
45. The Ozone-Depleting Substances (ODS) are found in which of the following layer of atmosphere ?
[A] Troposphere
[B] Stratosphere
[C] Mesosphere
[D] Ionosphere
Show Answer
Correct Answer: B [Stratosphere]
Notes:
The Ozone-Depleting Substances are Chlorofluorocarbons, HCFCs and Halons which are responsible for the depletion of ozone layer. These substances when transferred to Stratosphere cause the depletion of ozone layer.
46. Trans-boundary pollution (or) Acid rain is caused by ____:
[A] Hydrocarbon
[B] Carbon monoxide
[C] Nitrogen oxide and sulphur dioxide
[D] Carbon dioxide
Show Answer
Correct Answer: C [Nitrogen oxide and sulphur dioxide]
Notes:
Acid rain is a rain or any other form of precipitation that is unusually acidic i.e. it possesses elevated levels of hydrogen ions (low pH). It is caused by emissions of oxides of sulphur (SO2 or SO3) and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
47. Which of the following is another name for the fish farming revolution?
[A] Blue revolution
[B] White revolution
[C] Yellow revolution
[D] Brown revolution
Show Answer
Correct Answer: A [Blue revolution]
Notes:
Blue Revolution means the adoption of a package programme to increase the production of fish and marine products. The Blue Revolution in India was started in 1970 during the Fifth Five-Year Plan when the Central Government sponsored the Fish Farmers Development Agency.
48. In which country the worlds first negative emission carbon capture plant begins its operations?
[A] Iceland
[B] Germany
[C] Japan
[D] China
Show Answer
Correct Answer: A [Iceland]
Notes:
The world’s first negative emissions plant under the CarbFix Project to turn atmospheric carbon dioxide (CO2) into stone has begun operations in Hellisheidi, Iceland. It is intended to lock away carbon dioxide by reacting it with basaltic rocks.
49. The State which produces largest number of orchids in India is ______:
[A] Meghalaya
[B] Assam
[C] Sikkim
[D] Arunachal Pradesh
Show Answer
Correct Answer: C [Sikkim]
Notes:
Sikkim is the largest producer of orchids in India. The state is home to an amazing 450 species of exotic orchids alone. Annually, around 20 million stalks of orchids are produced in Sikkim. Sikkim, owing to its climatic conditions, has developed as a natural hub of orchids.
50. In an ecosystem, the movement of energy towards the higher trophic levels is:
[A] Multi-directional
[B] Unidirectional
[C] Undefined
[D] None of the flow
Show Answer
Correct Answer: B [Unidirectional]
Notes:
In any ecosystem, there is conversion of inorganic into organic material with the help of the radiant energy of the sun by the autotrophs; consumption of the autotrophs by heterotrophs; decomposition and mineralisation of the dead matter to release them back for reuse by the autotrophs, these events are repeated over and over again. There is unidirectional movement of energy towards the higher trophic levels and its dissipation and loss as heat to the environment.
