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UPSC CSE Environment & Ecology — practice questions — page 9

Explore 446 free Environment & Ecology questions in UPSC CSE Geography. Open each question or exercise to read its content, reference answers and available explanation.

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Environment & Ecology questions and exercises with answers

Showing questions 241–270 of 446.

Biodiversity is consistently richer in the:Read the answer and worked solution →Biodiversity is discussed at how many levels?Read the answer and worked solution →Variation of genes within a species is called:Read the answer and worked solution →Areas that are rich in species diversity are called:Read the answer and worked solution →Biodiversity plays which three roles?Read the answer and worked solution →Crop diversity is also called:Read the answer and worked solution →Tropical regions occupy about what share of the world's total area?Read the answer and worked solution →Tropical rain forests contain about what share of the species on earth?Read the answer and worked solution →Species introduced into a habitat that are not its natural inhabitants are called:Read the answer and worked solution →The IUCN classifies threatened species into how many categories?Read the answer and worked solution →The IUCN publishes information on endangered species worldwide as the:Read the answer and worked solution →Species likely to be in danger of extinction in the near future are classed as:Read the answer and worked solution →Species whose world population is very small and confined to limited areas are:Read the answer and worked solution →India signed the Convention of Biodiversity at the Earth Summit in Rio de Janeiro in:Read the answer and worked solution →How many other nations joined India in signing the Convention of Biodiversity?Read the answer and worked solution →The Wild Life (Protection) Act of India was passed in:Read the answer and worked solution →Tropical countries holding a large share of the world's species are called:Read the answer and worked solution →How many mega diversity countries are there?Read the answer and worked solution →In Madagascar, about what share of plants and animals are found nowhere else?Read the answer and worked solution →Catch the mega diversity countriesRead the answer and worked solution →Pop the threat categoriesRead the answer and worked solution →Run the conservation numbersRead the answer and worked solution →Slice the biodiversity wordsRead the answer and worked solution →Threat or protectionRead the answer and worked solution →Sort the diversity levelsRead the answer and worked solution →Type the numberRead the answer and worked solution →Biodiversity bingoRead the answer and worked solution →About what share of the earth's surface is covered with water?Read the answer and worked solution →Water is called a renewable resource because all of it moves within the:Read the answer and worked solution →By 2025, nearly how many people are predicted to live in absolute water scarcity?Read the answer and worked solution →

Worked practice questions

Biodiversity is consistently richer in the:

  1. Tundra
  2. Tropics
  3. Poles
  4. Deserts
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Correct answer: B. Tropics

1. Towards the poles there are fewer species. 2. The tropics are richest. 3. Solar energy and water drive the pattern. _Source: syllabus Fundamentals of Physical Geography, Chapter 16, Biodiversity and Conservation._

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Biodiversity is discussed at how many levels?

  1. Five
  2. Seven
  3. Three
  4. Four
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Correct answer: C. Three

1. Genetic, species and ecosystem. 2. There are three levels. 3. Each covers a different scale of variety. _Source: syllabus Fundamentals of Physical Geography, Chapter 16, Biodiversity and Conservation._

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Variation of genes within a species is called:

  1. Species diversity
  2. Ecosystem diversity
  3. Agro diversity
  4. Genetic diversity
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Correct answer: D. Genetic diversity

1. Humans differ in height and colour for this reason. 2. This is genetic diversity. 3. It is essential for healthy breeding. _Source: syllabus Fundamentals of Physical Geography, Chapter 16, Biodiversity and Conservation._

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