Ch 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 should 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

• niche

• community

• individual

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

• biosphere

• niche

• habitat

• 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

• niche

• abiotic role

• environmental role

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