Environment & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
41. In which of the following year did Bhopal Gas Tragedy took place?
[A] 1982
[B] 1984
[C] 1986
[D] 1988
Show Answer
Correct Answer: B [1984]
Notes:
The Bhopal gas tragedy also referred to as the Bhopal disaster is considered among the world’s worst industrial disasters. It was a gas leak incident on the night of 2–3 December 1984 at the Union Carbide India Limited pesticide plant which is located in Bhopal, Madhya Pradesh.
42. The Downhill movement of earth upper soil layer is mainly caused due to which of the following reason?
[A] Pollution
[B] Rain
[C] Drought
[D] None of the above
Show Answer
Correct Answer: B [Rain]
Notes:
A landslide is the movement of rock, earth, or debris down a sloped section of land. It is mainly caused due to a variety of factors. some of the man-made factors are- Deforestation, removal of the upper layer of soil, etc and the natural causes are rain, earthquake, etc.
43. Which of the following is a lake with low primary productivity as a result of low nutrient content?
[A] Eutrophic lake
[B] Oligotrophic Lake
[C] Mesotrophic lakes
[D] None of the above
Show Answer
Correct Answer: B [Oligotrophic Lake]
Notes:
The lakes which have low primary productivity as a result of low nutrient content are known as Oligotrophic Lake. These lakes have very low algal production therefore they often have very clear waters, with high drinking-water quality.
44. Which of the following is a measurement of all greenhouse gases we individually produce and has units of tonnes (or kg) of carbon dioxide equivalent?
[A] Carbon footprint
[B] Primary footprint
[C] Secondary footprint
[D] Carbon diet
Show Answer
Correct Answer: A [Carbon footprint]
Notes:
Carbon Footprint is a measurement of all greenhouse gases that we produce individually and has units of tonnes (or kg) of carbon dioxide equivalent. It is made up of the sum of two parts, i.e., the primary footprint and the secondary footprint.
45. Which of the following statements are correct with respect to Xerosere?
1. It is a type of plant succession which is limited by water availability.
2. Xerosere originates on rock surfaces which are in an unweathered state.
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:
Xerosere is a type of plant succession which is limited by water availability. Xerosere originates on rock surfaces which are in an unweathered state. There are different stages in a xerarch succession.
46. Which of the following statements are correct regarding Nanotoxicology?
1) It is the study of the toxicity of nanomaterials.
2) Inhalation exposure is of most concern.
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:
Nanotoxicology is defined as the study of the toxicity of nanomaterials. nanomaterials have unique properties as compared to their larger counterparts because of the large surface area to volume ratio of nanomaterials. Inhalation exposure is of most concern because of its quantum size.
47. Where is Nagavara lake located in Karnataka?
[A] Gulbarga
[B] Hubbali
[C] Kolar
[D] Bengaluru
Show Answer
Correct Answer: D [Bengaluru]
Notes:
Nagavara lake is located in Bengaluru, Karnataka. Bengaluru is known for several lakes formed from natural and man-made sources. Nagavara lake is among the prominent lakes in the city.
48. Deciduous forests can be seen in the areas having what amount of rainfall annually?
[A] 60-120 cm
[B] 120-150 cm
[C] 150-200 cm
[D] 200-250 cm
Show Answer
Correct Answer: A [60-120 cm]
Notes:
Deciduous forests can be seen in areas receiving 60 to 120 cms of rainfall annually.
49. Which among the following represents plateau phase in population?
[A] Birth rate and Death rate are equal
[B] Birth rate and death rate are not equal
[C] Birth rate is higher than death rate
[D] Death rate is more than birth rate
Show Answer
Correct Answer: A [Birth rate and Death rate are equal]
Notes:
During the plateau phase, population size is constant so no more growth occurs. This is the result of natality rate being equal to mortality rate and is caused by resources becoming scarce as well as an increase in predators, diseases and parasites.
50. In which country is the UNESCO World Heritage Site, Vjetrenica Cave located?
[A] Bosnia and Herzegovina
[B] Croatia
[C] Serbia
[D] Montenegro
Show Answer
Correct Answer: A [Bosnia and Herzegovina]
Notes:
Vjetrenica Cave, positioned in Ravno, Bosnia and Herzegovina, boasts remarkable biodiversity. As the world’s most biodiverse grotto, it houses over 200 animal species, with 90 troglobionts, creatures that live specifically in caves. The gem of nature spans 7,014 meters, augmented by four rivers, lakes, and waterfalls. Named for the chilling winds emanating from its entrance, it maintains a constant 11 degrees Celsius temperature. Chronologically, its first mention was in 77 A.D by Pliny the Elder, and it has been a protected sanctuary since 1950. This haven for cave-dwelling animals also features unique species, including bacteria and fungi.
