Mini Lab - Construct a Food Web
Mini Lab - Construct a Food Web
How is energy passed from organism to organism in an ecosystem? A food chain shows a single path for energy flow in an ecosystem. The overlapping relationships between food chains are shown in a food web.
Procedure
1. Read the following statements.
*Red foxes feed on raccoons, crayfish, grasshoppers, red
clover, meadow voles, and gray squirrels.
*Red clover is eaten by grasshoppers, muskrats, red foxes, and
meadow voles.
*Meadow voles, gray squirrels, and raccoons all eat parts of the
white oak tree.
*Crayfish feed on green algae and detritus, and they are eaten
by muskrats and red foxes.
*Raccoons feed on muskrats, meadow voles, gray squirrels, and
white oak trees.
2. Organize the previous information in a table. (Hint: List animals
in one column and what the animal eats in a row across the top.
Then use check marks to indicate who eats whom.) Be sure to
include a title for your table.
3. The use the information to construct a food web in a meadow
ecosystem. Your web must contain pictures as well as words!
4. Answer the analysis questions.
5. Create a lab report.
Analysis Questions.
1. Identify all of the herbivores, carnivores, omnivores, and
detritivores in the food web.
2. Describe how the muskrat would be affected if disease kills the
white oak trees.
Due Dates: Handwritten chart – Wednesday
Rough draft food web – Thursday
Typed Lab Report – Monday (Cover page, Table, Food Web,
Questions)
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