Ecology Unit 2 Review

Without limiting factors, a population will have what type of growth?

• Logarithmic (s curve)
• Linear (straight line)
• Exponential      (j curve)
• Quadratic (u shaped curve)

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Will competition increase/decrease the carrying capacity of an ecosystem for the animal in competition?

• Decrease
• Increase

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When a population grows past the ecosystem's carrying capacity, what happens to the population?

• Continues to grow
• The population starts to die off to return to carrying capcity
• The population will go extinct due to lack of resources
• The population grows then finds a new carrying capacity

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Which of the following is a limited resource?

• Trees
• Sunlight
• Air

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What effect will an invasive species have on the carrying capacity of an ecosystem?

• The carrying capacity will increase
• The carrying capacity for everyone will decrease
• The carrying capacity will only decrease for those in competition for same resource
• The carrying capacity for all animals will stay the same

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If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?

• The bird population would stay the same
• The bird population would infinitely increase
• The bird population would decrease

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Kudzu has overgrown many parts of southern Missouri and native ground plants have disappeared from the area. This is an example of:

• Parasitism between kudzu and the native plants
• A predator prey relationship between ground plants and kudzu
• Competition occurring between the native and invasive species
• Commesalism occurring between the kudzo and native plants

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A population of an organism will only grow exponentially if:

• The resources are unlimited
• They want to
• The resources are unlimited
• They do not like to compete

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The field mouse population in Australia has grown so fast that they eat an average of  $4 billion of wheat every year. Their fast growth is caused by:

• A. The mice like to reproduce
• B. A lack of a native species to eat the field mouse
• C. Abundant food supply
• Both B and C

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What letter shape graph would represent a population meeting carrying capacity in an ecosystem?

• J
• U
• S
• L

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