Edexcel A-Level Biology A2 5.13 Niche Distribution and Abundance Questions

Define the niche in the case, identify the resource or condition separating organisms and connect it to zonation, reduced competition or observed biomass.

Exam points

Explain reduced competition when species use different foods or reproductive sites.
Interpret biomass differences across environments through habitat suitability.
Explain zonation and abundance through niches, competition and tolerance limits.

[Maximum number: 2]

Lions, giraffes and acacia trees are found on the African Plains.
The diagram shows the energy in the trophic levels that these organisms occupy.

Give the meaning of each of the following terms, using the information in the diagram to illustrate your answer.

Niche

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Edexcel A-Level Biology A2 5.13 Niche Distribution and Abundance Questions question 1