Question

The diagram below represents a feeding relationship in an ecosystem.

1. Name the type of ecosystem represented by the above food web. (1mk)
2. Name the organisms in the food web that
   • Are producers (1mk)
   • Occupies the highest trophic level (1mk)
3.    
   • Write a food chain that ends with the hawk as quaternary consumer. (1mk)
   • State two short term effects on the above ecosystem if all the small fish were killed 

Answer 1

1. Aquatic
2.   
   • Phytoplanktons
   • Hawks
3.    
   • Phytoplanktons→Zooplanktons→Frogs →Snakes → Hawks
   •    
     • Snakes would decrease due to less food;
     • Zooplanktons would increase due to fewer predators;