Ecology 3.1/3.2 Review

The branch of biology dealing with interactions among organisms and between organisms and their environment is called

• economy

• modeling

• recycling

• ecology

Which of the following descriptions about the organization of an ecosystem is correct?

• Communities make up species, which make up populations

• Populations make up species, which make up communities

• Species make up communities, which make up populations

• Species make up populations, which make up communities

The simplest grouping of more than one kind of organism in the biosphere is

• a population

• a community

• an ecosystem

• a species

The lowest level of environmental complexity that includes living and nonliving factors is the

• biome

• community

• ecosystem

• biosphere

Which of the following is NOT a basic method used by ecologists to study the living world?

• experimenting

• animal training

• modeling

• observing

Plants are

• primary producers

• primary consumers

• herbivores

• omnivores

How do most primary producers make their own food?

• by using light energy to make carbohydrates (sugar)

• by using chemical energy to make carbohydrates (sugar)

• by changing water into carbon dioxide

• by breaking down remains to make carbon dioxide

Which of the following organisms does NOT require sunlight to live?

• chemosynthetic bacteria

• algae

• trees

• photosynthetic bacteria

In which way are plants in a sunny mountain meadow and sulfur bacteria in a deep-sea volcanic vent alike?

• They both use photosynthesis to make their own food.

• They both produce carbohydrates (sugar) and oxygen.

• They both use chemosynthesis to produce their own food.

• The both produce carbon and hydrogen.

In what way are herbivores and carnivores alike?

• They both use photosynthesis to make their own food.

• They both get energy from consuming other organisms.

• They both directly consume producers.

• They both are considered autotrophs.