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UPSC CDS Environment — practice by topic

Browse 309 questions across 14 Environment topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Environment topics

Environment & Ecology (308)Science & Technology (248)Current Affairs (218)Indian Geography (188)Soil & Vegetation (120)Conservation (39)Endangered Species (39)Environment Basics (39)National Parks (39)Protected Areas (39)Transport & National Parks (39)Indian Society (30)Physical Geography (30)World Geography (30)

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A plant community left undisturbed long enough to adjust to climate and soil is called:Read the answer and worked solution →Tropical evergreen forests need annual rainfall of over:Read the answer and worked solution →Rosewood, mahogany and aini are trees of the:Read the answer and worked solution →The most widespread forests of India, also called monsoon forests, are:Read the answer and worked solution →

Worked practice questions

A plant community left undisturbed long enough to adjust to climate and soil is called:

  1. Natural vegetation
  2. Plantation crops
  3. Orchard planting
  4. Garden landscaping
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Correct answer: A. Natural vegetation

1. A planted tree in a garden is not natural vegetation. 2. The same species growing wild in a forest is. 3. Undisturbed plant communities are natural vegetation. _Source: syllabus Geography, India Physical Environment, Chapter 5, Natural Vegetation._

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Tropical evergreen forests need annual rainfall of over:

  1. 20 cm
  2. 200 cm
  3. 50 cm
  4. 100 cm
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Correct answer: B. 200 cm

1. They grow on the western slope of the Western Ghats. 2. They need warm, humid conditions. 3. Rainfall must exceed 200 cm. _Source: syllabus Geography, India Physical Environment, Chapter 5, Natural Vegetation._

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Rosewood, mahogany and aini are trees of the:

  1. Evergreen forests
  2. Thorn forests
  3. Alpine pastures
  4. Mangrove swamps
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Correct answer: A. Evergreen forests

1. These trees reach 60 m or more. 2. They stay green all year. 3. They belong to the evergreen forests. _Source: syllabus Geography, India Physical Environment, Chapter 5, Natural Vegetation._

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How to practise

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