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Class 9 Biology · Chapter 2 · Test 1

Biodiversity and Classification

25 MCQs on Biodiversity, Its Importance, Classification, Taxonomic Ranks, and the Linnaean System

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

  1. Question 1

    What does biodiversity mean?

    • AThe variety of organisms in a particular area
    • BThe number of cells in an organism
    • CThe study of fossils
    • DThe classification of rocks
    Show answer

    Answer: A

    Biodiversity means the variety of organisms present in a particular area.

  2. Question 2

    Approximately how many kinds of organisms have biologists discovered and classified?

    • ATwo million
    • BTen thousand
    • COne thousand
    • DOne billion
    Show answer

    Answer: A

    Biologists have discovered and classified almost two million kinds of organisms.

  3. Question 3

    Which factor can affect biodiversity in a particular area?

    • AClimate
    • BLanguage
    • CPopulation age
    • DBuilding design
    Show answer

    Answer: A

    Biodiversity in an area depends on factors such as climate altitude and soil type.

  4. Question 4

    Which regions generally have greater biodiversity?

    • ATropical regions
    • BPolar regions
    • CDesert regions only
    • DArctic regions
    Show answer

    Answer: A

    Tropical regions generally have greater biodiversity than colder regions.

  5. Question 5

    How does biodiversity help ecosystems?

    • AIt helps maintain ecosystem stability
    • BIt destroys food chains
    • CIt prevents nutrient cycling
    • DIt eliminates organisms
    Show answer

    Answer: A

    Biodiversity contributes to the stability and balance of ecosystems.

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