Name_____________________
Online Trophic Levels Lab Journal Questions
Name of Ecosystem: ________________
1. Suggest reasons why the information represented in the
pyramid of numbers of animals of the ecosystems you studied
may not truly represent that ecosystem.
2. Does the population size increase or decrease at higher
trophic levels in the pyramid of numbers of an ecosystem
consisting of a tree, insects (that are herbivores) and
birds feeding on the insects? Explain your answer.
3. What might happen to an ecological pyramid of numbers in a
forest ecosystem if most of the deer were killed due to
hunting by people and disease? Explain your answer.
4. What would happen to an ecosystem if the decomposers
disappeared? Explain your answer.
5. Could there be a food chain without herbivores and
carnivores? Why or why not?
Online Trophic Levels Lab link (this would be great practice for the test!):
http://glencoe.mcgraw-hill.com/sites/dl/free/0078802849/383926/BL_02.html
Name_____________________
6. Does the type of animal (i.e. mammal, reptile, amphibian)
necessarily determine where on the energy pyramid that
organism falls? Why or why not?
7. Create a food chain and a food web from the energy pyramid.
Online Trophic Levels Lab link (this would be great practice for the test!):
http://glencoe.mcgraw-hill.com/sites/dl/free/0078802849/383926/BL_02.html