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4.1 Ecosystems

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Question 15
F

Thousands of caterpillars feed on the leaves of one large oak tree.

Which statement describes the pyramid of biomass for the oak tree and the caterpillars?

[1]
A

The bar for the oak tree is wider than the bar for the caterpillars.

B

The bar for the oak tree is narrower than the bar for the caterpillars.

C

The bars for the oak tree and the caterpillars are the same width.

D

The pyramid is upside down because there is only one oak tree.

Markscheme

4.1 Ecosystems Questions

  1. GCSE
  2. /Biology
  3. /4.1 Ecosystems

111 exam-style questions on OCR GCSE Biology 4.1 Ecosystems, covering 4.1.1 Cycling of materials in ecosystems, 4.1.2 Microorganisms in cycling materials, 4.1.3 The carbon and water cycles, 4.1.4 Factors affecting decomposition, 4.1.5 Levels of organisation in an ecosystem, 4.1.6 Abiotic and biotic factors affecting communities, 4.1.7 Interdependence and competition, 4.1.8 Trophic levels, 4.1.9 Pyramids of biomass, and 4.1.10 Efficiency of biomass transfers. Each one has a worked solution and a mark scheme showing where the marks go.

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