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9.1 Ecosystems and interdependence

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Question 7

A shrub produces nectar that is the only food source for ants living on it. The ants deter leaf-eating insects from feeding on the shrub's leaves.

The amount of nectar produced by the shrub falls. Which sequence is most likely to follow?

[1]
A

more ants, more protection for the shrub, fewer leaf-eating insects

B

more ants, less protection for the shrub, more leaf-eating insects

C

fewer ants, more protection for the shrub, fewer leaf-eating insects

D

fewer ants, less protection for the shrub, more leaf-eating insects

Markscheme

9.1 Ecosystems and interdependence Questions

  1. GCSE
  2. /Biology
  3. /9.1 Ecosystems and interdependence

82 exam-style questions on Edexcel GCSE Biology 9.1 Ecosystems and interdependence, covering 9.1.1 Levels of organisation in ecosystems, 9.1.2 Abiotic and biotic factors, 9.1.3 Importance of interdependence, 9.1.4 Parasitism and mutualism, and 9.1.5 Determining number of organisms in an area. Each one has a worked solution and a mark scheme showing where the marks go.

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