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9.2 Energy transfer and biodiversity

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Question 6
F

Fertiliser is washed into a pond. An algal bloom develops and submerged plants begin to die.

Which explanation links the bloom to the death of these plants?

[1]
A

Algae increase light penetration, reducing plant respiration.

B

Algae reduce light penetration, increasing plant photosynthesis.

C

Algae reduce light penetration, reducing plant photosynthesis.

D

Algae increase light penetration, increasing plant respiration.

Markscheme

9.2 Energy transfer and biodiversity Questions

  1. GCSE
  2. /Biology
  3. /9.2 Energy transfer and biodiversity

38 exam-style questions on Edexcel GCSE Biology 9.2 Energy transfer and biodiversity, covering 9.2.1 Energy transfer between trophic levels, 9.2.2 Efficiency of energy transfers, 9.2.3 Human interactions and biodiversity, 9.2.4 Benefits of maintaining biodiversity, and 9.2.5 Biological factors affecting food security. Each one has a worked solution and a mark scheme showing where the marks go.

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