A niche is

  1. the number of species present
  2. the role of a species in its ecosystem
  3. all the organisms in an area
  4. the place where an organism lives
Answer

B) the role of a species in its ecosystem

Niche = role. AS & A Level Biology · Topic 18 Classification, Biodiversity and Conservation · 18.2 Biodiversity

Biology MCQ · More A Level Biology: Classification, biodiversity and conservation MCQs · Practise