Ecology 102 Answers

Secondary succession can only occur as a transition from primary succession.

What types of organisms will be affected by a decreased supply of water in an ecosystem?a.Producers, consumers, and decomposers will be affected.b.Producers and consumers will be affected.c.Consumers and decomposers will be affected.d.No organisms will be affected.

What determines the carrying capacity of an ecosystem?a.the number of different types of organisms in an ecosystemb.the amount of available resourcesc.the square mileage it encompassesd.the ratio of biotic to abiotic factors

Which of the following is not an example of an abiotic factor?a.plantsb.airc.temperatured.soil

Which of the following factors might be affected by a wildfire?a.foodb.shelterc.biodiversityd.all of the above

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Pioneer species survive by living on rocks and minerals.

What types of organisms would you expect to see in an area that recently experienced a volcanic eruption?a.trees b.mosses and algaec.grass and bushesd.all types of organisms in fewer numbers

Which of the following does not occur in an aquatic ecosystem as a result of nutrient loading?a.acidification of the waterb.algae growth as a result of eutrophicationc.degraded quality of water for human and livestock consumptiond.improved water habitats for human recreation

Suppose a group of bobcats that normally live and hunt in the tops of mountains, start hunting prey at the base of the mountain and move into the valley below. Which of the following will most likely happen to the prey in the valley?a.Their numbers will soon increase.b.Their numbers will soon decrease.c.They will move to the tops of the mountains.d.They will remain unchanged.