Why do food chains rarely have more than five trophic levels?

  1. Animals cannot eat each other
  2. Decomposers eat the top consumers
  3. Too much energy is lost at each level
  4. Plants do not make enough oxygen
Answer

C) Too much energy is lost at each level

Energy loss limits chain length. O Level Biology · Topic 19 Relationships of Organisms with One Another and with the Environment · 19.1 Energy flow

Biology MCQ · More O Level Biology: Organisms and the Environment MCQs · Practise