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Aim How does energy flow through a food web? PowerPoint Presentation
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Aim How does energy flow through a food web?

Aim How does energy flow through a food web?

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Aim How does energy flow through a food web?

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  1. AimHow does energy flow through a food web?

  2. Do Now1. Answer the Do Now question2. Look over handed back work

  3. Food Chain _______________ ________________ ____________________ _______________

  4. Food Chain Grass Rabbit  Snake Bear Autotroph Herbivore Omnivore Carnivore Producer Primary Consumer Secondary Consumer Tertiary Consumer

  5. First level of pyramid • Producers • Producer level contains the most energy

  6. Next levels of pyramid • After the producer level, all subsequent levels are: Consumers

  7. Energy pyramid 1. A diagram showing the relative amount of energy contained in each level of a food chain or web

  8. Why less energy? 2. Energy is lost to the environment 3. Energy is used up by each organism for everyday life processes

  9. Energy passed to each level • Only about 10% of energy is passed from one level to the next level

  10. Food web to energy pyramid Food Web Energy pyramid Trees and Grass Hawk Snake, owl, hawk Cricket, mouse, deer Many food chains

  11. Brain Pop http://www.brainpop.com/science/energy/energypyramid/ Login In ps101q brainpop

  12. Base your answer on the diagram and on your knowledge of biology. Which level of consumers contains the largest percentage of total stored energy? • level A • level B • level C • level D

  13. Base your answer on the diagram and on your knowledge of biology. Which organism is a primary consumer? • alga • crustacean • sunfish • great blue heron

  14. The diagram shows nutritional relationships between organisms of various populations in a food web. Which organisms are classified as secondary consumers? • hawk, grasshopper, and mouse • rabbit, mouse, and snake • grasshopper, frog, and rabbit • snake, hawk, and frog

  15. The role of an organism within a community is known as its 1.niche 2.habitat 3.biome 4.succession