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 is the primary greenhouse gas emitted through human activities?
[A] Methane
[B] Carbon dioxide
[C] Carbon Monoxide
[D] Water vapour
Show Answer
Correct Answer: B [Carbon dioxide]
Notes:
Carbon dioxide is naturally present in the atmosphere as a part of the Earth’s carbon cycle. It is also the primary greenhouse gas which is emitted through human activities.
42. Arrange the following gases in the increasing order of Global warming potential:
1) Methane
2) Nitrous oxide
3) Perfluoro carbons
4) Sulfur hexafluoride
Select the correct option from the codes given below:
[A] 1, 2, 3, 4
[B] 2, 1, 3, 4
[C] 1, 2, 4, 3
[D] 2, 1, 4, 3
Show Answer
Correct Answer: A [1, 2, 3, 4]
Notes:
Carbon dioxide (CO2) has a GWP of 1 and serves as a baseline for other GWP values. GWP of Methane is 21. GWP of Nitrous oxide is 310, GWP of Perfluorocarbons is 140-11,700, and GWP of Sulfur hexafluoride is 23,900. Hence the correct sequence is 1, 2, 3, 4.
43. Which of the following biomes are included in the First phase of the LTEO Programme?
1) Eastern Himalayas
2) Western Himalayas
3) Eastern Ghats
4) Western Ghats
Select the correct option from the codes given below:
[A] Only 1 & 4
[B] Only 1, 2, & 4
[C] Only 1, 2 & 3
[D] 1, 2, 3 & 4
Show Answer
Correct Answer: B [Only 1, 2, & 4]
Notes:
The following Eight Biomes were considered in the first phase of the LTEO Programme namely; Western Himalaya, Eastern Himalaya, North-Western Arid Zone, Central Indian Forests, Western Ghats, Andaman & Nicobar Islands, Jammu & Kashmir and Sundarbans.
44. Which of the following instrument is used to record the earthquake wave?
[A] Hydrograph
[B] Seismograph
[C] Richter scale
[D] Pycnometer
Show Answer
Correct Answer: B [Seismograph]
Notes:
A seismograph which is also called as a seismometer, is an instrument which is used to detect and record the earthquake waves. The first seismograph was invented in 132 A.D.
45. The Screening Criteria under Environment Impact Assessment are based upon which of the following?
1. Scales of investment
2. Type of development
3. Location of development
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3
Show Answer
Correct Answer: D [1, 2 & 3]
Notes:
The Screening Criteria under Environment Impact Assessment are based upon the following:
1. Scales of investment
2. Type of development
3. Location of development
46. Which of the following statements are correct regrading Gene banks?
1. Gene banks are established to protect genetic material, be it plant or animal.
2. In plants, genetic material can be saved by freezing cuts from the plant, or stocking the seeds.
3. In animals, genetic material can be saved by freezing of sperm and eggs in zoological freezers until
further need.
Select the correct option from the code given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3
Show Answer
Correct Answer: D [1, 2 & 3]
Notes:
Gene banks are established to protect genetic material, be it plant or animal. In plants, genetic material can be saved by freezing cuts from the plant, or stocking the seeds. In animals, genetic material can be saved by freezing of sperm and eggs in zoological freezers until further need.
47. Highest source of air pollution in the world is _____:
[A] Aircraft
[B] Automobiles
[C] Industries
[D] Household wastes
Show Answer
Correct Answer: B [Automobiles]
Notes:
According to the US Environmental Protection Agency (EPA), automobile emissions are the number one source of carbon monoxide, lead, nitrogen oxides, and volatile organic compounds released into the atmosphere that are primarily responsible for air pollution. Industrial processes are the number two cause of lead pollution in the air, following automobile emissions.
48. The primary producer in an ecosystem are ____:
[A] Women
[B] Men
[C] Plants
[D] Bacteria
Show Answer
Correct Answer: C [Plants]
Notes:
Primary producers are the organisms in an ecosystem that produce biomass from inorganic compounds (autotrophs). In almost all cases, these are photosynthetically active organisms (plants, cyanobacteria and a number of other unicellular organism.
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.
