Environment & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
11. Which among the following gas is used as reference to calculate “Global Warming Potential (GWP)“?
[A] Carbon Dioxide
[B] Methane
[C] Ozone
[D] Nitrogen Di-oxide
Show Answer
Correct Answer: A [Carbon Dioxide]
Notes:
Global warming potential (GWP) is defined as the heat absorbed by the greenhouse gas in the atmosphere, as a multiple of the heat that would be absorbed by the same mass of CO2. GWP is 1 for CO2. For other gases it depends on the gas and circumstances.
12. The Washington Convention whose formal name is abbreviated as CITES is related to which among the following?
[A] Pesticides
[B] Ozone Depletion
[C] Endangered Species
[D] Human Rights
Show Answer
Correct Answer: C [Endangered Species]
Notes:
CITES, also known as Washington Convention, is a multilateral treaty to protect the endangered plants and animals. It was drafted in 1963 at a meeting of members of the International Union for Conservation of Nature. The convention was opened for signature in 1973 and came into force in 1975.
13. Which of the following is the most abundant pollutant found in smog?
[A] Ozone
[B] Sulphur oxides
[C] Nitrogen oxides
[D] Volatile organic compounds
Show Answer
Correct Answer: A [ Ozone ]
Notes:
Ozone is the most abundant pollutant in smog.
14. What kind of biomass ecological pyramid is present in grassland ecosystem?
[A] Inverted
[B] Upright
[C] Can be both inverted or upright
[D] None of the above is true
Show Answer
Correct Answer: B [Upright]
Notes:
In the pyramid of biomass the dry weight of organism at each trophical level is weighted. In the grassland ecosystem the pyramid of biomass is upright as the maximum weight is there is grasses followed by the primary consumers and then the secondary consumers.
15. Which of the following are the constituents of Photochemical Smog?
- Sunlight
- Volatile Organic Compounds
- Nitrogen Oxides
Select the correct answer from the codes given below-
[A] 1,2,3
[B] 1 and 2 only
[C] 1 and 3 only
[D] 2 and 3 only
Show Answer
Correct Answer: A [1,2,3]
Notes:
Photochemical smog is the pollutant formed by the reaction of sunlight with nitrogen oxide and one of the Volatile organic compound.
16. Which of the following statements is true about Biochemical Oxygen Demand?
[A] It shows the amount of oxygen required to oxidize the organic wate into inorganic material
[B] It shows the amount of oxygen required to remove both degradable and non degradable waste in the water
[C] It shows the amount of oxygen required to decompose the organic waste in the water
[D] None of the above is true
Show Answer
Correct Answer: C [It shows the amount of oxygen required to decompose the organic waste in the water]
Notes:
Biochemical Oxygen Demand is the amount of oxygen required by the bacterias and microorganism present in water to decompose the organic waste
17. Which of the following is true about MIKE program?
- It is against the illegal killing of elephants
- All the South Asian countries are part of this program
Select the correct answer from the codes given below:
[A] 1 only
[B] 2 only
[C] Both 1 & 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: A [1 only]
Notes:
MIKE stands for Monitoring the Illegal Killing of Elephants and was started in the South Asian Region in 2003. the program is under CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora). Countries involved in the project are
South Asia – Bangladesh, Bhutan, India, Nepal and Sri Lanka
Southeast Asia – Cambodia, China, Indonesia, Lao PDR, Malaysia, Myanmar, Thailand and Viet Nam
18. Which of the following statements are correct about the Savannah Biome?
1) Savannah is most extensively found in Africa.
2) Grasses with scattered trees and fire-resisting thorny shrubs.
Select the correct answer 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:
Savannah is most extensively in Africa. Grasses with scattered trees and fire-resisting thorny shrubs are present. The fauna includes a great diversity of grazers and browsers such as antelopes, buffaloes, etc.; the carnivores include lion, cheetah, hyena; and mongoose, and many rodents.
19. Which of the following statements are correct with respect to the niche of a species?
1. Two species can have exact identical niches.
2. Niche plays an important role in conservation of organisms.
3. Physical & chemical niche include factors like temperature, land shape, land slope, humidity & other requirement.
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: B [Only 2 & 3]
Notes:
No two species can have exact identical niches. Niche plays an important role in conservation of organisms. Physical & chemical niche include factors like temperature, land shape, land slope, humidity & other requirement.
20. Which of the following is a symbiotic relationship between the two living species in which one organism is benefitted at the expense of the other?
[A] Amensalism
[B] Commensalism
[C] Mutualism
[D] Parasitism
Show Answer
Correct Answer: D [Parasitism]
Notes:
Parasitism is a type of symbiotic relationship between the two living species in which one organism is benefitted at the expense of the other. For example, bacteria or viruses often rely on a third organism, known as the carrier, or vector, to transmit them to the host.
