In a food chain, the arrows show

  1. the order of extinction
  2. the size of organisms
  3. who eats the most
  4. the direction of energy flow
Answer

D) the direction of energy flow

Arrows show energy transfer. 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