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Feeding relationships

Feeding relationships

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Question 15

In a pine forest, the following data was collected for a food chain:

  • Producer: Pine tree (population: 2)
  • Primary consumer: Pine aphid (population: 120)
  • Secondary consumer: Spider (population: 15)
  • Tertiary consumer: Coal tit (population: 3)
a.

Describe the shape of the pyramid of numbers representing this food chain.

[2]
b.

Explain how a pyramid of biomass for this same food chain would differ from the pyramid of numbers.

[2]
c.

State two processes or reasons why not all the energy stored in the producers is transferred to the primary consumers.

[2]
Markscheme

Feeding relationships Questions

  1. IGCSE
  2. /Biology
  3. /Feeding relationships

20 exam-style questions on Edexcel IGCSE Biology Feeding relationships. Each one has a worked solution and a mark scheme showing where the marks go.

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