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Name: _________________________ H.1.4.10 Pyramid of Numbers Test Extended Study 1. What are ecological Pyramids of Numbers used for? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 2. What happens to the number and size of organisms as you go up the Pyramid of Numbers? The number of organisms ______________________________________________ The size of organisms _________________________________________________ 3. Explain why there is a change in numbers as you go up the pyramid? ______________________________________________________________________________ ______________________________________________________________________________ 4. Explain energy transfer through an ecosystem. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 5. Give an example of a simple food chain and explain energy loss in the Food Chain. Food chain: ____________________________________________________________________ Explanation: ___________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 6. Insert the titles of each trophic level in the pyramid? Page 1 of 2 Name: _________________________ 7. The use of pyramids of numbers has its limitations. Explain the shape of the following pyramid and give a suitable example. ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ 8. Give a suitable example to complete this pyramid of numbers. Page 2 of 2
