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9.1 Ecosystems and interdependence

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Question 31
H

Students investigate why a plant is less abundant near a hedge. Light intensity decreases and soil moisture increases towards the hedge.

Which additional investigation best tests whether low light reduces plant growth?

[1]
A

grow plants at different light intensities with soil moisture controlled

B

grow plants at different light intensities with soil moisture also changed

C

grow plants at one light intensity with soil moisture also kept constant

D

grow plants at one light intensity with soil moisture left uncontrolled

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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