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UNIT 1 ECOLOGY (REVIEW)

Total questions: 50

Worksheet time: 38mins

Name
Class
Date
1.

New fuels are being produced by converting corn and grass into compounds containing alcohol that can be broken down for energy in various engines. The purpose of this research is to 

a)

reduce the use of nonrenewable resources.

b)

increase the rate of air pollution. 

c)

reduce the rate of homeostasis in organisms. 

d)

cause a loss of biodiversity in the rain forests.

2.

The original source of energy for a food web is...

a)

plants

b)

sun

c)

producers

d)

decomposers

3.

Decomposers get energy from...

a)

the sun

b)

eating plants

c)

eating animals

d)

dead things and waste

4.

Producers are ...

a)

plants

b)

able to do photosynthesis

c)

also called autotrophs

d)

all of these are true

5.

Who is the producer?

a)

lettuce

b)

greenfly

c)

ladybird

d)

thrush

6.

Which of the following is NOT a consumer

a)

grass

b)

dog

c)

shark

d)

fish

7.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
8.

If there is 2000 kcal of energy in this particular ecosystem, how many kcal of energy will be available for hawk?

(a)  

9.

The amount of organisms that an ecosystem can support is known as (a)  

10.

What is the carrying capacity of this graph?

a)

1-15 years

b)

2300

c)

21 years

d)

500

11.

What happened to the animal's population?

a)

It decreased and they are at a lower carrying capacity

b)

They evolved to be smaller and need less food

c)

The are extinct

d)

They went to a lower area where there was no competition

12.
The efficiency of energy transfer from a lower trophic level to the next highest level is roughly
a)
1%
b)
10%
c)
100%
d)
1000%
13.

When a population grows past the ecosystem's carrying capacity, what happens to the population?

a)

Continues to grow

b)

The population starts to die off to return to carrying capcity

c)

The population will go extinct due to lack of resources

d)

The population grows then finds a new carrying capacity

14.
Eat primary consumers (can be carnivores and omnivores)
a)
Tertiary Consumers
b)
Secondary Consumers
c)
Quaternary Consumers 
d)
Top Predators 
15.

In this aquatic biome, salt and freshwater mix.

a)

salt water

b)

sea

c)

ocean

d)

estuary

16.

Which type of consumer is primarily located in trophic levels 3 & 4?

a)

carnivore

b)

omnivore

c)

herbivore

d)

scavenger

17.

Which organism is the base of the food chain and supports the whole ecosystem?

a)

Producer

b)

Consumer

c)

Heterotrophs

d)

Carnivore

18.

What is the carrying capacity of an ecosystem?

a)

The number of organisms that the ecosystem can support and all their needs will be met. The line on the graph where it levels out and stays straight.

b)

A chain of organisms in which each link feeds on the one ahead and is eaten by the one behind.

c)

The non-living factors which affect the system - for example weather, natural disasters, drought

d)

A symbiotic relationship in which one member is benefited and the second is neither harmed nor benefited.

19.
The living part of an ecosystem
a)
Biotic
b)
Abiotic
c)
Mother Earth
d)
Flowers
20.

What is the correct order for this food chain?

a)

Owl, Mouse, Grasshopper, Grass

b)

Grass, Mouse, Owl, Grasshopper

c)

Grass, Owl, Grasshopper, Mouse

d)

Grass, Grasshopper, Mouse, Owl

21.

What is the hawk in the food web?

a)

Producer

b)

Primary consumer

c)

Secondary consumer

d)

Tertiary consumer

22.

What would happen to the bird if the green fish died out?

a)

the bird population would grow

b)

the bird population would die out

c)

the smaller fish will die out

23.

What would happen if their were no producers?

a)

Every population would grow larger

b)

Everything would die out

c)

The animals would make their own food

24.

Where do producers get their energy from?

a)

The sky

b)

The sun

c)

The ground

25.
What factors affect aquatic ecosystems? 
a)
Light, salinity, temperature
b)
Sun, moon and stars
c)
Nothing
d)
Coral reefs, whales
26.

Area in a body of water where it is cool and dark and bottom-feeders are located.

a)

Littoral Zone

b)

Benthic Zone

c)

Limnetic Zone

27.
Important limiting factors in streams and rivers include
a)
amount of oxygen
b)
temperature of water
c)
all of the above
28.

In order for population to grow

a)

death rate must be higher than birth rate

b)

heart rate must be lower than death rate

c)

birth rate must equal death rate

d)

birth rate must be higher than death rate

29.
One reason for a rapid population growth is...
a)
an increase in pull factors.
b)
declining death rates. 
c)
a sparse population density. 
d)
internal migration.
30.

What is a Biotic Factor?

a)

The carrying capacity of an ecosystem

b)

A NON-living factor that can affect an ecosystem

c)

A living factor that can affect an ecosystem

31.

What is an Abiotic Factor?

a)

A NON-living factor that can affect an ecosystem

b)

A living factor that can affect an ecosystem

c)

The carrying capacity of an ecosystem

32.
Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?
a)
Type of gasoline
b)
which car the gas is put into
c)
how fast the car can drive
d)
how much gas is put into the car
33.

What is the DEPENDENT variable (effect) in this experiment?


"Does eating breakfast improve test scores?"

a)

eating breakfast or not

b)

the grade you got on the test

c)

what time you get up in the morning

d)

how tasty the breakfast is

34.

A student wants to test the hypothesis of "If salt is added to water then the boiling point of water will decrease (go down)." What is the independent variable?

a)

Whether salt is added or not

b)

Boiling Point

c)

Amount of water

35.
On a graph, which axis shows the dependent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
36.
On a graph, which axis shows the independent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
37.
oxygen is a gas produced by _ and used by  _ 
a)
plants and animals 
b)
photosynthesis and carbon dioxide 
c)
animals and plants 
d)
carbon dioxide and photosynthesis
38.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
39.
carbon dioxide is a gas produced  by ________ and used by __________
a)
plants and animals 
b)
carbon and photosynthesis
c)
animals and plants 
d)
photosynthesis
40.

Plants use ____________ to make their own food

a)

Water

b)

Sunlight

c)

Carbon dioxide

d)

All of these

41.

How much did you like UNIT 1 content?

4 lines
42.

What is it called when rainwater contributes to the flow of rivers and streams?

a)

Transformation

b)

Runoff

c)

Irrigation

d)

Desertification

43.
What is A?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
44.
What is B?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
45.
What is      D?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
46.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
47.
Snow, sleet, hail, and rain are all examples of  ________________. 
a)
evaporation
b)
condensation
c)
accumulation
d)
precipitation
48.

The process where water soaks into soil or porous rock.

a)

runoff

b)

percolation

c)

transpiration

d)

evaporation

49.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
50.
this type of succession occurs after a forest fire
a)
primary succession
b)
secondary succession
c)
both

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