Ecology TEST Review

Which is an abiotic factor?

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Ecology is the study of interactions between __________.

• the animal groups in an area
• living and nonliving things in an area
• the nonliving things in an area
• the plants and animals in an area

Which is a biotic factor that might affect the life of a water -dwelling organism?

• temperature of the water
• speed of the water current
• pollutants in the water
• bacterial population in water

The portion of the Earth that supports the existence of living things is the ___________.

• ecosystem
• habitat
• biosphere
• niche

The illustration shows living and nonliving factors that interact in a certain area. Which term best describes the interactions shown in the diagram?

• biome
• food chain
• ecosystem
• population

Which is an autotroph?

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The dense needles of Douglas fir trees can prevent most light from reaching the forest floor. This situation would have an IMMEDIATE effect on _____________.

• producers
• carnivores
• herbivores
• decomposers

In an ecosystem, what happens to the atoms of certain chemical elements such as carbon, oxygen, and nitrogen? Think Biogeochemical cycles.

• They move into and out of living systems
• They are only found in abiotic factors
• They move out of living systems and do not return
• They move into living systems and remain there.

Which process in the water cycle returns water to the Earth's surface?

• evaporation
• precipitation
• runoff
• transpiration

Which organisms capture atmospheric nitrogen for the process of nitrogen fixation?

• animals
• bacteria
• fungi
• plants