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Ecosystems Unit Test Review

Total questions: 51

Worksheet time: 35mins

Name
Class
Date
1.

Which of the following is an abiotic factor in an ecosystem?

a)

plants

b)

bacteria

c)

fungus

d)

water

2.

Which of the following best describes a population?

a)

members of the same species living in the same place at the same time

b)

all the red birds in an area

c)

all types of organisms living in the same place

d)

all the members of the same species

3.

An example of a population would be all

a)

trees in a forest

b)

red maple trees in a forest

c)

plants in a forest

d)

animals in a forest

4.

Temperature is

a)

Biotic

b)

Abiotic

5.

Plants are

a)

Biotic

b)

Abiotic

6.

All the different populations in a specific area or region at a certain time.

a)

species

b)

biome

c)

community

d)

population

7.

All of the living organisms and the non-living factors in once place at one time.

a)

ecosystem

b)

population

c)

community

d)

biome

8.

Abiotic

a)

living

b)

non-living

c)

both

d)

neither

9.

Biotic

a)

either

b)

both

c)

non-living

d)

living

10.

Sunlight, water, and oxygen are ______ factors of an environment.

a)

abiotic

b)

biotic

11.

1 individual deer

a)

population

b)

organism

c)

ecosystem

d)

community

12.

BIOTIC (select ALL)

a)

soil

b)

sunlight

c)

hawk

d)

moss

e)

water

13.

When a mosquito infects a human with Zika virus while feeding on the human's blood, this is an example ______.

a)

parasitism

b)

mutualism

c)

commensalism

14.

What eats producers?

a)

primary consumers

b)

secondary consumers

c)

tertiary consumers

15.

Environmental conditions that prevent populations from increasing are called

a)

Limiting Factors

b)

Restrictions

c)

Carrying capacity

d)

Climax settings

16.

What is a decomposer's niche in an ecosystem?

a)

Produce sugar

b)

Convert chemical energy into radiant energy.

c)

Eat decaying organisms to return nutrients to the soil.

d)

Provide oxygen to the ecosystem.

17.

If the number of prey decreases, what happens to the population of their predators?

a)

Increases

b)

Decreases

c)

Stays the same

18.

Which of the following are limiting factors that would cause a decrease in an ecosystem's carrying capacity for an organism? (SELECT ALL THAT APPLY)

a)

More predators

b)

Human development reducing shelter

c)

More food

d)

Increase of disease

19.
Why is the insect a consumer?
a)
It is eaten by a mouse.
b)
It can make its own food.
c)
It eats the plant.
20.
Short Answer on Test: Why will having fewer insects affect the mice?
a)
The mice will not have enough insects to eat.
b)
It will not affect the mice.
c)
The mice will have too many insects to eat.
21.
In the food chain pictured, the source of energy for the water plant is ______.
a)
Sun
b)
Water Plant
c)
Mayfly
d)
Trout
22.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
23.
What are animals called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Plants
24.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
25.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
26.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
27.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
28.
Which type of consumer eats plants only?
a)
Herbivores
b)
Omnivores
c)
Carnivores
d)
Scavengers
29.
Which type of consumer eats meat only?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Omnivores
30.
Which type of consumer eats meat and plants?
a)
Herbivores
b)
Carnivores
c)
Omnivores
d)
Plants
31.
Which of these is a decomposer?
a)
Fungi
b)
Hawk
c)
Dog
d)
Grass
32.
True/False
Food webs show you everything an animal eats. Food chains show you one thing.
a)
True
b)
False
33.
Which of these is true about this food web?
a)
The Owl gets its energy from the producer.
b)
The Lion gets its energy only from a wild cat.
c)
The Kite gets its energy from the goat.
d)
The Mouse is most likely to die, several ways.
34.
Limiting factors are sometimes helpful because they can keep the population from getting too large.
a)
True
b)
False
35.
A snake is eaten by a hawk. The hawk is the _______.
a)
prey
b)
parasite
c)
predator
d)
all of these
36.
Food, water, sunlight, shelter, and space are resources that are  __________.
a)
limiting factors
b)
wet
c)
messy
d)
found in rocks
37.
If the population of a certain predator increases, there is often _______ its prey
a)
a decrease the population of
b)
an increase of the population of 
c)
great news for its prey of
d)
no  impact found on
38.
If there is more food than usual in an ecosystem, then...
a)
Populations will stay the same
b)
Populations will decrease
c)
Populations will increase
39.
Any thing or organism that regulates the size of a population of another organism is known as __________.
a)
a limiting measure
b)
a limiting factor
c)
factorization
d)
materialization of precipitation
40.

Which of the following is a saltwater ecosystem?

a)

Oceans

b)

River

c)

Ponds

d)

Lakes

41.

Which of the following ecosystems is characterized by flat land, little rainfall, and low growing plants such as grass and wildflowers?

a)

Grassland

b)

Taiga

c)

Tundra

d)

Tropical Rainforest

42.

The pond is a ___________.

a)

Terrestrial Ecosystem

b)

Aquatic Ecosystem

43.

The grassland is a ___________.

a)

Terrestrial Ecosystem

b)

Aquatic Ecosystem

44.

Which of the following ecosystem has a high salinity factor?

a)

River

b)

Ocean

c)

Pond

d)

Lake

45.

This word is used to describe a water-based habitat

a)

Terrestrial

b)

Aquatic

c)

Biotic

d)

Abiotic

46.

This word is used to describe land-based habitats

a)

Terrestrial

b)

Aquatic

c)

Biotic

d)

Abiotic

47.

Which of the following best describes an estuary?

a)

Aquatic

b)

Terrestrial

48.

Which of the following best describes turtles, algae, fish and beavers?

a)

Biotic factors found in lakes and ponds

b)

Abiotic factors found in lakes and ponds

c)

Biotic factors found in grasslands

d)

Abiotic factors found in forests

49.

Which of the following best describes soil, sunlight and temperature?

a)

Abiotic factors in the ocean

b)

Biotic factors in an ocean

c)

Biotic factors in a forest

d)

Abiotic factors in a forest

50.

Which of the following best describes crabs, blue heron, and grasses?

a)

Biotic factors in an estuary or saltmarsh

b)

Abiotic factors in an estuary or saltmarsh

c)

Biotic factors in a forest

d)

Biotic factors in a lake

51.

Which of the following best describes brackish water, mud, sunlight, and temperature

a)

Biotic factors in the ocean

b)

Abiotic factors in the ocean

c)

Abiotic factors in an estuary or saltmarsh

d)

Biotic factors in grasslands

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