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Ecosystems Review

Total questions: 36

Worksheet time: 20mins

Name
Class
Date
1.
What will most likely happen to the foxes and the wolves if the rabbits are removed?
a)
The foxes will eat more wolves
b)
The foxes will eat fewer wolves
c)
There will be more foxes and wolves
d)
There will be fewer foxes and wolves
2.
Decomposers are important in a food chain because they 
a)
produce their own food using light from the sun
b)
break down the dead organisms and recycle nutrients into the soil
c)
stop the flow of energy from one organism to the other
d)
are microscopic and other organisms cannot consume them
3.
If additional wrens are introduced to into this ecosystem, there will most likely be a decrease in the
a)
frog population
b)
falcon population
c)
snake population
d)
grasshopper population
4.
What is the correct order of organisms in a food chain?
a)
carnivores, producers, herbivores
b)
producers, herbivores, carnivores
c)
herbivores, producers, carnivores
d)
producers, carnivores, herbivores
5.

A consumer gets energy by

a)

eating other organisms

b)

photosynthesis

c)

absorbing energy from the sun

d)

hibernating

6.

What is a biotic factor?

a)

living

b)

nonliving

c)

dead

d)

air

7.

What is an abiotic factor?

a)

living

b)

nonliving

c)

dead

d)

animals

8.

Most producers get energy by

a)

using photosynthesis

b)

eating other organisms

c)

hibernating

d)

breaking down wastes

9.

A predator...

a)

is often a herbivore

b)

gets energy through photosynthesis

c)

hunts other animals

d)

is always an omnivore

10.

prey...

a)

hunts other animals

b)

is always a carnivore

c)

is always a herbivore

d)

gets eaten by predators

11.

Plants take in ___________

a)

oxygen

b)

sulfur

c)

carbon dioxide

d)

hydrogen peroxide

12.

Which organism below is NOT an example of a decomposer?

a)

leaves

b)

mushroom

c)

worm

13.

Which of the following organisms is a consumer?

a)

bacteria

b)

hawk

c)

mushroom

14.

Humans are considered

a)

consumers

b)

decomposers

c)

producers

15.

A period of slowed life process that permits certain animals to survive winter conditions.

a)

circadian rhythms

b)

hibernation

c)

carbon cycle

d)

substrate

16.

The process by which various compounds of nitrogen are used and reused as they move through the biotic and abiotic communities.

a)

oxygen cycle

b)

carbon cycle

c)

rhythms

d)

nitrogen cycle

17.

Rain, snow, sleet and hail are examples of

a)

condensation

b)

precipitation

c)

evaporation

d)

water cycle

18.

Lowered body temperature, slowed metabolism, seasonal rhythm are involved in

a)

succession

b)

habitat

c)

hibernation

d)

diurnal activity

19.

Changes in an ecosystem that take place once a year.

a)

seasonal rhythms

b)

circadian rhythms

c)

oxygen cycle

20.

An place where organism live

a)

humus

b)

niche

c)

habitat

d)

niche

21.

A limited area in which living and non living things interact.

a)

ecosystems

b)

abiotic environment

c)

niche

d)

habitat

22.

Decaying plants and animal material in the soil.

a)

precipitation

b)

producer

c)

humus

d)

substrate

23.

The predictable series of changes that occur in biotic communities,

a)

water cycle

b)

seasonal rhythm

c)

succession

24.

All the members of one species living in a particular ecosystem.

a)

community

b)

niche

c)

population

25.

A chipmunk hibernating through the cold winter is an example of

a)

organisms affecting each other

b)

the abiotic environment affecting the biotic community

c)

the biotic community affecting the abiotic environment

d)

a circadian rhythm

26.

Which of the following is NOT part of the biotic community in a lake?

a)

fish

b)

water

c)

bacteria in the mud

d)

aquatic plants

27.

Which is the best example of a niche?

a)

a fox chasing and then eating a rabbit

b)

sunlight illuminating the forest floor

c)

fog rising from a cold mountain lake

d)

a deer standing motionless at the forest's edge

28.

A change that occurs on the 24 hour cycle.

a)

seasonal rhythm

b)

circadian rhythm

c)

oxygen cycle

29.

The internal clock that controls many organism daily rhythms is a called a

a)

niche

b)

nocturnal rhythm

c)

circadian rhythm

30.

The movement of water from the earth to the atmosphere is called

a)

precipitation

b)

evaporation

c)

water cycle

31.

The material, usually rock and clay beneath the soil or below a body of water.

a)

humus

b)

substrate

c)

bedrock

32.

The study of organisms in their habitats.

a)

biology

b)

geology

c)

ecology

d)

oceanography

33.

The study of organisms in their habitats.

a)

biology

b)

geology

c)

ecology

d)

oceanography

34.

An ecosystem that has a large amount of water.

a)

forest

b)

mountain

c)

desert

d)

aquatic

35.

Precipitation that enters the soil.

a)

runoff water

b)

ground water

c)

substrate

36.

Check all that are considered biomes.

a)

Tundra

b)

Forest

c)

Desert

d)

Grassland

e)

Aquatic fresh and salt water

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