Ecology Pre-Test

An example of a primary consumer is

• Carnivore

• Herbivore

• Omnivore

• Tertiary Consumer

The water cycle is different from other cycles such as Carbon and Nitrogen cycle in that

• the water is chemically unchanged throughout the cycle.

• water is not recycled, it flows in way through ecosystems.

• water is an element not a molecule.

• the water cycle is an open system.

Large areas of the African rain forest have been cut down. This resulted in

• a decrease in biodiversity.

• reduced photosynthesis.

• reduced transpiration.

• all of the above.

The increase in carbon dioxide in the atmosphere is due to

• use of fertilizers

• amount of plants on earth.

• combustion of fossil fuels.

• temperature of Earth.

What is the primary role of decomposers?

• chemosynthesis

• nitrogen fixation

• breaking down organic matter

• photosynthesis

Some bacteria live on nodules of plant roots. The plant provides the bacteria with nutrients, while the bacteria provide beneficial nitrogen compounds to the plant. This relationship is called _____

• commensalism

• parasitism

• mutualism

• succession

Invasive species often thrive in foreign ecosystems because

• they have evolved to develop adaptations specific to the ecosystem.

• they have natural predators in the foreign ecosystem.

• they have less competitors relative to native species.

• they always have longer life spans.

Biomes are

• groups of similar ecosystems.

• many members of a species.

• organisms that can reproduce together.

• organisms living in the same area.

Which of the following is a greenhouse gas that contributes to global warming?

• nitrogen gas

• carbon dioxide

• ozone

• hydrogen gas

When studying both the biotic and abiotic factors in a defined area, scientists are studying ecology at which level?

• ecosystem

• community

• species

• population