Unit 2 Interdependence
Quiz 1: Food Webs and Eco Relationships
Study Guide
Unit 2 Quiz 1 will consist of multiple choice and short answer questions and will include the following topics
and skills. Remember energy and matter transformations are still important! Remember to review your class
notes, class presentations, PowerPoints, worksheets, textbook notes and packets.
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Definitions:
 Autotroph
 Heterotroph
 Producer
 Consumer (primary, secondary, tertiary)
 Decomposer
 Scavenger
 Herbivore
 Omnivore
 Carnivore
 Detrivore
 Biodiversity
 Energy pyramid
 Biomass pyramid
 Numbers pyramid
 Food chain
Food web
Trophic level
Biomagnification
Eutrophication
Niche
Ecological relationship
Symbiosis
Mutualism
Commensalism
Predator/Prey
Keystone predator species
Invasive species
Competition
Population graphs
**Skills (be able to do); use your worksheets for practice!
 Explain how biotic and abiotic factors affect each other
 Explain what happens to the available energy as you move up the energy pyramid
 Explain what happens to the ecosystem biomass as you move up the biomass pyramid
 Explain what happen to the concentration of poisons and toxins as you move up the biomass pyramid
 Compare the energy and biomass pyramids to the numbers pyramid
 Explain what the arrow means in a food web
 Use food webs to predict available energy to different trophic levels
 Explain feeding relationships between trophic levels
 Solve 10% rule problems, calculate available energy
 Explain an organism’s niche in a food web
 Explain how organisms compete for food
 Predict what would happen to the food web if the amount or biomass of producers were reduced
 Predict the impact of removing one or several members of a food web on the remaining food web
 Explain how disasters and disturbances affect a food web
 Determine the amount of energy-transferring steps between species in a food web
 Explain the 4 types of ecological relationships
 Compare and contrast the three symbiotic relationships
 Compare and contrast symbiotic relationships to predator/prey
 Explain the cyclical population relationship of predator/prey
 Explain predator/prey interaction
 Recognize, draw, and analyze predator/prey population graphs
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