Biology Ch 4Mouse Mischief Review

Organisms living in a community and all the physical parts of its environment make up a(n)

ecosystem.

habitat.

food chain.

The most important abiotic factor for the organisms in an ecosystem is

sunlight.

weather.

water.

Animals that feed on plants are at least in the

first trophic level

second trophic level

third trophic level

The many different species that live together in a habitat are called a(n)

ecology

food chain.

community.

An organism that gets energy from organic wastes and dead bodies is a(n)

omnivore.

producer.

decomposer

The number of trophic levels in an energy pyramid is

seldom more than four.

always exactly four.

never less than four.

Which process takes carbon dioxide from the atmosphere?

photosynthesis

decomposition

combustion

Which process returns carbon dioxide to the atmosphere?

combustion

decomposition

Both (a) and (b

Which process contributes to the formation of fossil fuels?

combustion

decomposition

Both (a) and (b

How do animals contribute carbon dioxide to the atmosphere?

by cellular respiration

by their decomposition

Both (a) and (b)

The production of ammonia by bacteria during the decay of animal waste is called

assimilation.

ammonification.

nitrification.

denitrification.

Grizzly bears, snakes, and worms can be members of the same

species.

trophic level.

ecosystem.

None of the abov

All the organisms that live in a particular place and the physical aspects of that place make up a(n)

ecosystem.

Habitat.

community.

food chain.

The number of species living in an ecosystem is referred to as

succession.

biodiversity.

the food chain

productivity

The most important abiotic factor for the organisms in an ecosystem is

climate

sun.

weather.

water

Animals that feed on plants are in which of the following?

First trophic level

Second trophic level

Third trophic level

Fourth trophic level

The number of trophic levels in an ecological pyramid

is limitless

is limited by the amount of energy that is lost at each trophic level

never exceeds four.

never exceeds thre

The movement of substances, such as water and nitrogen, in a circular path between the nonliving environment and living

organisms is called

a reservoir pathway.

photosynthesis.

cycles of matter.

succession

In a typical succession initiated by a retreating glacier,

pioneer plants precede trees.

the first plants contribute to soil formation.

it takes many years for trees to be able to thrive.

All of the above

Algae are

producers.

consumers.

parasites.

decomposers.

Leopard seals are

producers.

consumers.

parasites.

decomposers.

Organisms that obtain their energy from the organic wastes and dead bodies at all the energy levels in an ecosystem are called

decomposers.

producers.

consumers.

herbivores.

Every time energy is transferred in an ecosystem, potential energy is lost

as heat.

due to weather.

because some animals die.

when it is recycled back to producers.