Download Food Chain Study Guide

4th Grade Study Guide
Food Chain
Student Questions and Answers:
1. What are three organisms considered to be producers?
Possible answers: Pine tree, fruit trees, grasses, vegetable plants, rose
bushes, etc.
2. Why are producers important in an ecosystem?
Possible answer: Producers use energy from the sun to produce food and
oxygen for all other organisms.
3. What are three different organisms considered to be consumers?
Possible answers: Horses, dogs, cats, cows, humans, birds, fish, snakes,
insects
4. What purpose(s) do consumers serve in an ecosystem?
Answer: Consumers control populations of other organisms; they also return
carbon dioxide and nutrients to the environment that the
producers need to produce food.
5. What are three different organisms considered to be decomposers?
Possible Answers: Bacteria, mushrooms (fungi), some insect larva, and
insects.
6. What two things that would happen to an ecosystem if no decomposers were
present?
Answer: Very few nutrients would be returned to the environment. Dead
organisms would not be broken down and would continue to pile up in the
ecosystem.