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 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.
42. 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.
43. Where is Lingambudhi Lake located?
[A] Bengaluru
[B] Hubbali
[C] Mysuru
[D] Shivamogga
Show Answer
Correct Answer: C [Mysuru]
Notes:
Lingambudhi Lake is situated in Mysuru city, Karnataka. Mysuru is known for its lakes and parks, and Lingambudhi Lake is a well-known water body in this region. It serves as an important ecological and recreational area within the city limits.
44. The Red Data Book is the documentation of endangered rare species of ____:
[A] Other living organisms
[B] Fauna
[C] Flora
[D] All of the above
Show Answer
Correct Answer: D [All of the above ]
Notes:
A Red Data Book contains lists of species whose continued existence is threatened. Species are classified into different categories of perceived risk. It documents rare and endangered species of animals, plants and fungi, as well as other living organisms in an area, region or country.
45. The sum of genes in a population is called ____:
[A] Phenotype
[B] Karyotype
[C] Genotype
[D] Gene pool
Show Answer
Correct Answer: D [Gene pool]
Notes:
Phenotype refers to a set of observable characteristics of an individual or group resulting from the interaction of its genotype with its environment. Gene pool refers to the stock of different genes in an interbreeding population.
46. Which of the following is the treatment of water pollution?
[A] Bag house filter
[B] Reverse Osmosis
[C] Windrow composting
[D] Venturi scrubber
Show Answer
Correct Answer: B [Reverse Osmosis]
Notes:
Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water. It can remove many types of dissolved and suspended species from water, including bacteria, and is used in both industrial processes and the production of potable water (Desalination of marine water). It is most commonly known for its use in drinking water purification plants particularly in countries of middle east.
47. Which of the following is an air pollutant?
I. Water vapour
II. Carbon dioxide
III. Hydrogen Gas
[A] Only I
[B] Only II
[C] Only III
[D] Both II and III
Show Answer
Correct Answer: B [Only II]
Notes:
An air pollutant is a substance in the air that can have adverse effects on humans and the ecosystem. Because of its role as a greenhouse gas Carbon dioxide (CO2) has been described as “the leading pollutant” and “the worst climate pollution”. Other examples include carbon monoxide gas from motor vehicle exhaust, or the Sulphur dioxide released from factories.
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. Solar energy is converted into chemical energy during ____:
[A] Photosynthesis
[B] Combustion
[C] Transition
[D] Fusion
Show Answer
Correct Answer: A [Photosynthesis]
Notes:
Photosynthesis in plants converts radiant energy from the sun into chemical energy in the form of glucose (sugar) using electrons and protons from water. Plants take in water, carbon dioxide, and sunlight and turn them into glucose and oxygen. Water (6H2O) + Carbon Dioxide (6CO2) + Sunlight (Radiant Energy) = Glucose (C6H12O6) + Oxygen (6O2).
50. In 1973, the Project Tiger was started in which National Park?
[A] Sanjay Gandhi
[B] Sunderbans
[C] Jim Corbett
[D] Bhitarkanika
Show Answer
Correct Answer: C [Jim Corbett]
Notes:
Jim Corbett believed in the conservation of the ecosystem and wildlife, especially tigers and that is why Jim Corbett National Park was chosen as the venue for the inauguration of ‘Save the tigers’ project in India. Project tiger was launched in 1973. Basic intention of Project Tiger is to maintain the ecological balance of nature and conserve extant ecosystems. The project seeks to establish a natural link between the wildlife & flora of national parks and sanctuaries and the humans living on their peripheries.
