Quarterly 1 - 2020

Which phrase best describes the focus of ecology?

• individual organisms

• individual cells

• interactions among organisms

• interactions among cells

What is the term for a group of different species in a given area?

• population

• ecosystem

• community

• biome

Which of the following is an example of a biotic factor in an ecosystem?

• sunlight

• stream

• tree

• rock

Wind is considered to be an abiotic factor because it

• is not related to biodiversity.

• is a nonliving thing.

• is in equilibrium.

• is not in any ecosystem.

A rain forest has a high level of biodiversity because it has

• many abiotic factors.

• some endangered species.

• few connections between living things.

• a wide variety of living things.

A keystone species is a species that

• goes unnoticed if its numbers decrease.

• alters an area by building bridges and dams.

• leads to a decrease in an area’s biodiversity.

• has an unusually large impact on its ecosystem.

An organism that makes its own food is called a

• consumer.

• producer.

• heterotroph.

• chloroplast.

A moose is considered to be a consumer because it

• gets energy by eating other resources.

• makes its own food.

• forms carbohydrates using chemicals.

• uses sunlight for energy

The basis for the energy in an ecosystem is provided by

• consumers.

• heterotrophs.

• chemosynthesis.

• producers.

Most producers get energy from the Sun using the process of

• respiration.

• consumption.

• photosynthesis.

• chemosynthesis.