Aim How does energy flow through a food web?

Do Now 1. Answer the Do Now question 2. Look over handed back work

Food Chain _______________  ________________  ____________________  _______________

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

First level of pyramid Producers Producer level contains the most energy

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

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

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

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

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

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Base your answer on the diagram and on your knowledge of biology 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

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

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

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