Question

Study the food web below representing a certain ecosystem and use it to answer the questions that follow.
         

1. State the trophic level occupied by the lion in the food web. 
2. Write down a food chain in which the vulture is a tertiary consumer.
3.  
   1. Name the organism with the largest biomass.
   2. Give two reasons

Answer 1

1. Secondary consumer;
2.  
   • Grass → antelopes → lions → vulture;
   • Grass → caterpillars → Guinea fowl → Vulture;
3.  
   1. Grass;
   2.  
      • Many organism’s depend on it for food/energy, being the primary producer;
      • energy is lost during its transfer to higher levels through respiration, excretion and defecation