Exercise 2.1: Producers, Consumers, and Decomposers

Here is a list of organisms that can be found in various types of ecosystems.

  • large trees
  • grass and seeds
  • squirrel
  • mice
  • dandelion
  • owl
  • mosquito larvae
  • mosses
  • wild herbs
  • black bear
  • jack fish
  • algae
  • bushes with berries
  • frog
  • minnows 
  • heron
  • worms
  • hawk
  • cat tails (bull rushes)
  • fox
  • wild flowers
  • grey wolf
  • gophers
  • snake
  • lilypad
  • grasshopper
  • fungus
  • mushrooms
  • bacteria
  • worms 

1. Place the organisms from the list above into their correct ecosystem and categorize them as a producer, consumer, or decomposer. You may use each organism more than once if they are likely to live in more than one ecosystem.

Forest Ecosystem

Pond Ecosystem

Grassland Ecosystem

Producer

Primary Consumer (Herbivore)

Secondary Consumer (Carnivore)

Decomposers