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FOOD WEBS AND PYRAMIDS

Study the food pyramid illustration below to answer the following questions.

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1. Organisms that make their own food are known as AUTOTROPHS OR HETEROTROPHS.

2. Organisms that eat other organisms are known as AUTOTROPHS OR HETEROTROPHS.

3. What makes up the bottom of the food pyramid? PRODUCERS OR CONSUMERS

4. Where do producers get their energy from? ________________

5. List three different producers. _____________, ______________, and _______________.

6. The next level in the food pyramid is the primary consumers. Primary consumers are considered CARNIVORES, HERBIVORES, OR OMNIVORES.

7. Define herbivore. _______________________________________________________________

8. List two examples of a primary consumers ________________ and ____________________.

9. The next level in the food pyramid is the secondary consumers. Secondary consumers are considered CARNIVORES, HERBIVORES, OR OMNIVORES. (*There are 2 answers)

10. Define carnivore. _______________________________________________________________

11. Define omnivore. _______________________________________________________________

12. An organism that eats the dead is known as a SCAVENGER OR DECOMPOSER.

13. An organism that breaks down dead matter and returns it to the soil is a

SCAVENGER OR DECOMPOSER.

14. List a scavenger ______________________. List a decomposer _______________________.

Circle the letter of the correct answer.

|15. A heterotroph… |16. A cow (that eats plants) is… |17. If a person eats a vegetable, the person is acting|

| |a. a primary consumer |as a… |

|a. is an autotroph |b. a heterotroph |a. primary producer |

|b. eats other organisms |c. an herbivore |b. primary consumer |

|c. is a primary producer |d. all of the above |c. secondary consumer |

|d. A and C | |d. tertiary consumer |

|18. If a person eats a steak (from a cow), the |19. If a person eats a salmon (that ate smaller fish |20. A scavenger … |

|person is acting as… |that ate algae), the person is acting as… | |

|a. primary producer |a. primary producer |a. is an autotroph |

|b. primary consumer |b. primary consumer |b. eats decomposing matter |

|c. secondary consumer |c. secondary consumer |c. kills animals |

|d. tertiary consumer |d. tertiary consumer |d. all of the above |

Circle the organisms that complete the food chains below.

[pic]

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When any organism dies, it is eventually eaten by scavengers (like vultures, worms and crabs) and broken down by decomposers (mostly bacteria and fungi), and the exchange of energy continues.

a. jellyfish

b. spider

c. krill

d. starfish

e. clam

a. zooplankton

b. algae

c. seal

d. walrus

e. moss

a. sheep

b. goat

c. ant

d. owl

e.moose

a. weasel

b. spider

c. seaweed

d. wolf

e.cricket

a. rabbit

b. anaconda

c. falcon

d. grass

e.spider

a. lion

b. starfish

c. fish

d. grass

e.crow

a. moth

b. snail

c. whale

d. caterpillar

e.bird

a. spider

b. fish

c. lion

d. wheat

e. human

a. plankton

b. alligator

c. fish

d. grass

e. chicken

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