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Food Chains and Webs

Food Chains and Webs. Producers. Primary Consumers. Secondary Consumers. Tertiary Consumers. Another Link in the Food Chain . Everyone plays a specific role in the food chain of life. You might be a human thinking they are king of the hill or you might be a bacterium under the feet.

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Food Chains and Webs

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  1. Food Chains and Webs

  2. Producers Primary Consumers Secondary Consumers Tertiary Consumers

  3. Another Link in the Food Chain Everyone plays a specific role in the food chain of life. You might be a human thinking they are king of the hill or you might be a bacterium under the feet. You are very important to the survival of the system no matter what role you play.

  4. Food Chains and Webs You will see the termsfood chains and food webs. They describe the same series of events that happenwhen one organism consumes another to survive.

  5. Food web is a more accurate term since every organism is involved with several other organisms.

  6. The Producers Producers are the beginning of a simple food chain. Producers are plants and vegetables.

  7. The Producers All energy comes from the Sun and plants are the ones who make food with that energy. They use the process of photosynthesis. Plants also make loads of other nutrientsfor other organisms to eat.

  8. The Consumers Consumers are the next link in a food chain. There are three levels of consumers.

  9. Primary consumers (1st Order) • Worms, insects, squirrels, mice: all eat plants (HERBIVORES) ex: squirrel eats acorns • Secondary consumers (2nd Order) • Eat the primary consumers (CARNIVORES)example: cat eats squirrel Tertiary consumers (3rd order) Eat the primary and secondary consumers (CARNIVORES)ex: wolf eats cat and squirrel

  10. Omnivores eat bothplants and meat They can be EITHERprimary or secondary consumers.

  11. Scavengers =They eat the remains of dead organisms left by the consumers - vultures, coyotes, hyenas

  12. The Decomposers The last links in the chain are the decomposers. (They break things down) Like bacteria, mold, fungi, mushrooms If you die, they eat you. If you poop, they eat that. If you lose a leaf, they eat it. Whenever something that was alive dies, the decomposers get it.

  13. The producers can then use the nutrients and elements once it's in the soil. Decomposers break down nutrients in the dead "stuff" and return it to the soil. The decomposers complete the system, returning essential molecules to the producers.

  14. The End

  15. This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.

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