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Biology (Cell, Genetics & Ecosystems)

Cell structure, genetics and heredity, ecosystems, biodiversity, and life processes

Sample Practice Questions

  1. What is an ecosystem?

    • A forest only
    • A group of species
    • All living and non-living components interacting in an area
    • The habitat of an organism
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    Answer: All living and non-living components interacting in an area

  2. What is the term for the role an organism plays in its ecosystem?

    • Habitat
    • Niche
    • Population
    • Community
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    Answer: Niche

  3. What is the role of decomposers in an ecosystem?

    • Produce food
    • Eat herbivores
    • Break down dead organic matter and recycle nutrients
    • Fix nitrogen in soil
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    Answer: Break down dead organic matter and recycle nutrients

  4. What is the formula for aerobic respiration?

    • C₆H₁₂O₆ → CO₂ + H₂O + ATP
    • C₆H₁₂O₆ + O₂ → CO₂ + H₂O + ATP
    • CO₂ + H₂O → C₆H₁₂O₆ + O₂
    • C₆H₁₂O₆ + H₂O → CO₂ + O₂
    Show answer

    Answer: C₆H₁₂O₆ + O₂ → CO₂ + H₂O + ATP

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Practice Questions

Practise NSTSE questions on Biology (Cell, Genetics & Ecosystems). Answers are revealed after each question.

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