Chapter 3 - Ecology

The study of ecology includes the study of the interrelationships between organisms and

• other organisms of the same species.

• organisms of different species.

• their environment.

• all of these.

The term biodiversity refers to

• the number of species in an area.

• the amount of habitat available in an area.

• the total number of organisms in an area.

• all of these.

Regions of the biosphere that share certain environmental conditions, such as climate, and have a certain set of organisms adapted to those conditions are known as

• populations.

• biomes.

• niches.

• ecozones.

Which of the following would be considered a biotic factor of an ecosystem?

• its average temperature

• its annual rainfall totals

• the types of soil present

• the kinds of predators there

All the organisms of the same species and living in the same area are known as a(n)

• population.

• community.

• niche.

• individual.

The smaller part of an ecosystem that an organism prefers to live in is known as that organism’s

• biosphere.

• habitat.

• niche.

• climate.

The way that an organism lives in its habitat, including its effects on that habitat and on other organisms that share the habitat, is known as that organism’s

• biota.

• abiotic role.

• niche.

• environmental factor.

Autotrophs are also known as

• heterotrophs.

• consumers.

• producers.

• predators.

Competition can occur between

• organisms of the same species.

• organisms of different species.

• organisms using the same resource.

• all of these.

Which of the following shows a plausible food chain?

• decomposer, carnivore, herbivore, producer

• producer, herbivore, carnivore, decomposer

• decomposer, producer, carnivore, herbivore

• producer, carnivore, decomposer, herbivore