1. Bellringer/5.1 Notes

2. 5.1
Energy Flow

3. I. How Organisms Obtain Energy
Plants make their own food.
Photosynthesis-process in which plants make their own food.
Plants are also called Autotrophs
Heterotroph-
an organism that must feed on other organisms.

4. Types of heterotrophs:
Carnivore-eats other animals
Herbivore-only eats plants

5. Omnivore-eats both plants and animals
Scavenger-eats dead animals

6. Decomposer-breaks down and absorbs energy from dead organisms.

7. Matter and Energy Flow
Energy flows through organisms in an ecosystem.
Energy flow is shown by a food chain
Energy flows from autotrophs to the heterotrophs and finally to the decomposers
Food chains have between 3 to 5 steps

9. Energy is lost during each step of the food chain.
Each organism in a food chain represents a Trophic Level
Several food chains connected together make up a Food Web.
Food webs paint a more realistic picture of how energy flows through an ecosystem.

10. Food Web

11. Ecological Pyramid-another model used to show how energy flows through an ecosystem.
E.P. get smaller as they get taller because there is less energy available for the next trophic level.

12. Classwork:
Section 1 Review, Pg. 123
Questions 1 – 6
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