Unit 4 Review Game

In studying ecology, which 2 broad factors do scientists observe and experiment on?

• Predators and their prey

• heterotrophs and autotrophs

• symbiosis and ecological pyramids

• organisms and their environments

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An energy pyramid shows...

• producers and consumers in their appropriate trophic levels

• that energy increases as you go up the trophic levels

• decomposers are only found at the highest levels

• all of the above

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A primary consumer is always the _____ consumer in a food chain.

• first

• second

• third

• fourth

How is energy lost as it moves up a food chain?

• through growth and movement

• through heat and feces

• through heat and movement

• through feces and water waste

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What effect can non-native species have on an ecosystem? Why?

• reduce biodiversity; grow and reproduce rapidly

• increase biodiversity; grow and reproduce rapidly

• reduce biodiversity; they are eaten by the native species

• increase biodiversity; they are eaten by the native species

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What is the difference between a community and an ecosystem?

• a community is an ecosystem + all of the abiotic factors

• an ecosystem is a community + all of the abiotic factors

• an ecosystem has fewer populatons

• an ecosystem only looks at specific species in an area

Which type of graph would only show a population reaching its biotic potential?

• J-curve (exponential growth)

• bell-curve (growth with massive die-offs)

• s-curve (growth with limits)

• v-curve (death and massive growth)

Out of the following, which trophic level would you expect to contain consumers that have the most toxins such as DDT?

• 1st

• 2nd

• 3rd

• 4th

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Which of the following is not an example of a limiting factor?

• predation

• food supply

• carrying capacity

• water

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Which of the following is true about secondary succession?

• it takes thousands of years to establish the climax community

• it starts off with bare rock

• it occurs after a natural disaster, like a forest fire

• the first organisms that grow are trees and bushes