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Environment & EcologyMediumAsked in: UPSC Civil Services · CSE Prelims 2022, GS Paper I

Consider the following pairs : Wetland/Lake — Location 1. Hokera Wetland — Punjab 2. Renuka Wetland — Himachal Pradesh 3. Rudrasagar Lake — Tripura 4. Sasthamkotta Lake — Tamil Nadu How many pairs given above are correctly matched ?

  1. A.Only one pair
  2. B.Only two pairs
  3. C.Only three pairs
  4. D.All four pairs

Correct answer

B. Only two pairs

Explanation

The correct answer is B, Only two pairs. Renuka Wetland in Himachal Pradesh and Rudrasagar Lake in Tripura are correctly matched; Hokera and Sasthamkotta are not.

All four are Ramsar sites. Hokera Wetland lies near Srinagar in the Kashmir valley of Jammu and Kashmir, and is a stop for migratory birds from Siberia and Central Asia. Renuka Wetland, in Sirmaur district of Himachal Pradesh, is a natural lake fed by springs and named after the mother of Parashurama. Rudrasagar Lake, near Melaghar in Tripura, holds the Neermahal water palace built by Maharaja Bir Bikram Kishore Manikya. Sasthamkotta Lake, in Kollam district, is the largest freshwater lake of Kerala and supplies drinking water to the area.

Pair 1 is wrong because Hokera is in Jammu and Kashmir, not Punjab.

Pair 4 is wrong because Sasthamkotta is in Kerala, not Tamil Nadu.

So A, C and D are wrong, as exactly two pairs are correct.

Exam tip: Hokera = Kashmir; Renuka = Himachal; Rudrasagar = Tripura (Neermahal); Sasthamkotta = Kerala.

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Q1.Environment & EcologyAsked in: CDS · CDS-II 2018, GKEasy

Which one of the following statements with regard to growth of coral reefs is not correct?

  1. A.Coral can grow abundantly in freshwater.
  2. B.It requires warm water between 23 °C-25 °C.
  3. C.It requires shallow saltwater, not deeper than 50 metres.
  4. D.It requires plenty of sunlight to aid photosynthesis.
Show answer
Correct answer: A. Coral can grow abundantly in freshwater.

Reef-building corals are marine animals and die in fresh water, so this statement is false. Corals are tiny polyps that build skeletons of calcium carbonate and live with algae called zooxanthellae inside their tissues.

Q2.Environment & EcologyAsked in: CDS · CDS-I 2024, GKEasy

Which one of the following biosphere reserves is spread over three States in India?

  1. A.Nilgiri
  2. B.Achanakmar-Amarkantak
  3. C.Seshachalam
  4. D.Agasthyamalai
Show answer
Correct answer: A. Nilgiri

The Nilgiri Biosphere Reserve spreads across Tamil Nadu, Kerala and Karnataka. Set up in 1986, Nilgiri was India's first biosphere reserve, and in 2000 it became the first Indian reserve on UNESCO's World Network of Biosphere Reserves.

Q4.Environment & EcologyAsked in: UPSC CAPF · CAPF 2017, Paper IEasy

Which one of the following is NOT decomposed by bacterial action ?

  1. A.Vegetable remains
  2. B.Plastic materials
  3. C.Animal carcasses
  4. D.Wastes of flowers
Show answer
Correct answer: B. Plastic materials

Ordinary plastics are non-biodegradable, so bacteria and fungi cannot break them down in any useful length of time. Most plastics, such as polyethylene, polypropylene and PVC, are long synthetic polymers made from petroleum.

Q5.Environment & EcologyAsked in: UPSC Civil Services · CSE Prelims 2024, GS Paper IEasy

According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions?

  1. A.Locomotives using fossil fuels
  2. B.Ships using fossil fuels
  3. C.Extraction of metals from ores
  4. D.Power plants using fossil fuels
Show answer
Correct answer: D. Power plants using fossil fuels

The EPA names the burning of fossil fuels by power plants and other industrial facilities as the largest source of sulphur dioxide.