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Cambridge IGCSE Biology practice

How does a pyramid of biomass help ecologists?

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Show answerFood chains and food webs revisionRevise the key idea

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MCQ

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cambridge_mcq

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Topic

Food chains and food webs

Exam-style question

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How does a pyramid of biomass help ecologists?.

  1. A.By showing the number of organisms
  2. B.By showing energy flow through trophic levels
  3. C.By showing only producers
  4. D.By showing the age of organisms

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Paper 3 structured question: Food chains and food webs

Paper 3Theory (Core)2 marks

Description

Pyramids in Food Chains

Explain why a pyramid of biomass is more useful than a pyramid of numbers when showing a food chain.

  1. a

    State one benefit of using a pyramid of biomass instead of a pyramid of numbers.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Identify one reason why a pyramid of numbers can be misleading.

    Aim for approximately 1 distinct marking point.

    [1]