Chapter 3 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 organisms, which make up populations.

• Populations make up organisms, which make up communities.

• Organisms make up communities, which make up populations.

• Organisms 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 ecology that includes living and nonliving (biotic and abiotic) factors is the

• biome.

• community.

• ecosystem.

• biosphere.

Plants are

• primary producers.

• primary consumers.

• herbivores.

• omnivores.

How do most primary producers make their own food?

• by using light energy to make carbohydrates

• by using chemical energy to make carbohydrates

• 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 what way are herbivores and carnivores alike?

• They both use photosynthesis to make their own food.

• They both obtain energy by consuming other organisms.

• They both directly consume producers.

• They both are considered to be autotrophs.

What animals eat both producers and consumers?

• herbivores

• omnivores

• chemotrophs

• autotrophs

A bird stalks, kills, and then eats an insect. Based on its behavior, which pair of ecological terms describes the bird?

• herbivore, decomposer

• producer, heterotroph

• carnivore, consumer

• autotroph, herbivore