Ecology UnitTrophic Levels and Energy Transfer in

Ecosystems

Lesson objectives Teachers' notes

Standard B-6: The student will demonstrate an understanding of the interrelationships among organisms and the biotic and abiotic components of their environments.

Nets Standards for Students.

Ecology Unit

Teachers' notesLesson objectives

Subject:

Topic:

Grade(s):

Prior knowledge:

Cross-curricular link(s):

Ecology

Trophic Levels and Energy Transfer

10th

Food Chains and Food Webs

Lesson notes:

Students have gained prior knowledge of succession through a PowerPoint Presentation and a Video.

Click Here for PowerPoint Presentation.

Ecology UnitTable of Contents

I. Title PageII. Teacher's NotesIII. Table of ContentsIV. Content Page One

VI. Content Page Three

X. Activity from Lesson Activity ToolkitXI. Resources

VII. Content Page FourVIII. Content Page Five

V. Content Page Two

IX. Content Page Six

Ecology UnitTrophic Levels

· Producers (Green Plants) are the largest Trophic Level found on the first level of the Trophic Pyramid· Primary Consumers (Herbivores) are located on the second level, Secondary Consumers (Small Carnivores) are located on the third level, and Tertiary Consumers (Large Carnivores) are located on the fourth or top level of the Trophic Pyramid. · Few Ecosystems can contain more than 4 or 5 Trophic Levels. Fewer organisms are located at the top. Video

Ecology Unit

Trophic Level

Trophic Level One

Trophic Level Two

Trophic Level Three

Trophic Level Four

Producers or Consumers

Organism

Click on the Screen Shade for the Answer.

Trophic Levels Review

Ecology Unit

Trophic Pyramid

Drag and Drop the Organism into the correct trophic level.

Producers

Primary Consumer

Secondary Consumer

Tertiary Consumer

Ecology Unit

· Energy is Lost or Used as it Flows through the Trophic Levels of an Ecosystem. · At each Trophic Level, the Energy stored in an organism is about 1/10 that of the Level Below it. (10%).

Energy Flow in an Ecosystem

Ecology Unit

Trophic Pyramid

Determine how much energy is available for organisms on each level above the producers. Show your work!!!! Click on the leaf for the answer. Drag the answer into the pyramid.

30,000 Kcal

Primary Consumer: 30,000 Kcal X .10 = 3000 Kcal

Secondary Consumer: 300 Kcal

Tertiary Consumer: 30 Kcal

Ecology UnitIdentify the Following Organisms

Ecology Unit

Create a Food Web and Trophic Pyramid Activity. Choose a partner. Read and follow the instructions on the handout.

Click on the Pyramid for the Handout.

Ecology Unit

Resourceshttp://www.clker.com/clipart-25743.htmlhttp://www.webplaces.com/html/animations.htmhttp://player.discoveryeducation.com/index.cfm?guidAssetId=648C1828-55B8-4775-831F-08877B6FB8C2&blnFromSearch=1&productcode=US