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Unit 9 Review

Total questions: 42

Worksheet time: 33mins

Name
Class
Date
1.
How do autotrophic organisms obtain their energy?
a)
Consuming other organisms.
b)
Converting solar energy into chemical energy.
2.
The direction that the arrowhead points to indicates...
a)
The direction where energy flows to
b)
The direction where energy comes from
3.
Which of the following organisms are heterotrophic?
a)
Aloe vera plant
b)
Fruit
c)
Fruit flies
d)
Pine tree
4.
What is the ecological role of the krill in this food chain?
a)
Tertiary Consumer
b)
Producer
c)
Primary Consumer
d)
Secondary Consumer
5.
Which of the following organisms are autotrophic?
a)
Flower
b)
Rabbit
c)
Wolf
6.
What is the ecological role of the seal?
a)
Primary Consumer
b)
Secondary Consumer
c)
Producer
d)
Tertiary Consumer
7.
Plants receive 4500 cal from the sun. How many calories will a primary consumer receive?
a)
4500
b)
4.5
c)
45
d)
450
8.
How much energy is passed on to the next trophic level?
a)
100%
b)
10%
c)
1%
d)
0%
9.
What is maximum number of organisms that can live in one population in an ecosystem over time?
a)
Limiting factor
b)
Ecological Succession
c)
10% Rule
d)
Carrying Capacity
10.
What starts every food chain or food web?
a)
Producers
b)
Primary Consumers
c)
Secondary Consumers
d)
The Sun
11.
What is formed during primary succession that doesn't need to be formed during secondary succession?
a)
pioneer species
b)
soil
c)
climax community
d)
lichens
12.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
13.
After a forest fire, an ecosystem would start regrowth through -
a)
primary succession
b)
secondary succession
c)
climax community
d)
limiting factors
14.
Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?
a)
A tornado
b)
A volcanic eruption
c)
A flood
d)
A drought
15.

If farmers use a controlled burn to prevent forest fires, what would most likely be the first plants to return?

a)

trees

b)

shrubs

c)

mosses

d)

grasses

16.

Which would result in primary succession?

a)

volcano destroying habitat leaving only soil and ash

b)

Tornado destroying a crop leaving very little soil

c)

Glacier retreating exposing bare rock

d)

limiting factors

17.
Logistic population growth leads to this kind of graph
a)
S curve
b)
J curve
c)
M curve
d)
W curve
18.
Exponential population growth leads to this kind of graph
a)
S curve
b)
J curve
c)
M curve
d)
W curve
19.
What is the carrying capacity of this population?
a)
100
b)
200
c)
300
d)
400
20.

Which of these populations would be most likely regulated by competition for food?

a)

lions

b)

rabbits

c)

spiders

d)

dandelions

21.
A population is...
a)
A group of one species in one area
b)
Multiple species that live in one area
c)
All of the living and nonliving things in an area
d)
None of these
22.
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
23.

Food, water, sunlight, shelter, and space are resources that are called

a)

limiting factors

b)

species

c)

biotic

d)

none of the above

24.

Which limiting factor would increase due to the number of individuals in a population?

a)

Unusual weather

b)

Natural disaster

c)

Disease

25.

Which limiting factor is density independent?

a)

water

b)

food

c)

natural disasters

26.

When a population grows past the ecosystem's carrying capacity, what most likley 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 completely extinct due to lack of resources

27.

What point on the graph represents the carrying capacity?

a)

A

b)

B

c)

C

d)

D

28.

If a disease destroying wheat plants in a field swept through an ecosystem, what would happen to the bird population that feed off of the wheat in the the field ?

a)

The bird population would stay the same

b)

The bird population would increase

c)

The bird population would decrease

29.

Largest number of individuals of a population that the environment can support...

a)

carrying capacity

b)

population

c)

biome

d)

mutualism

30.
The process of plants losing water through their leaves is called ____.
a)
condensation
b)
evaporation
c)
transpiration
d)
exhaling
31.
What is the most abundant gas in the atmosphere?
a)
hydrogen
b)
oxygen
c)
helium
d)
nitrogen
32.
Where are denitrifying bacteria found?
a)
In the soil
b)
Root nodules
c)
In dead things
d)
In the atmosphere
33.
What is the only process that removes carbon from the atmosphere?
a)
combustion
b)
cellular respiration
c)
photosynthesis
d)
decomposition
34.

Which cycle are fossil fuels (oil, coal, natural gas) part of?

a)

carbon

b)

water

c)

nitrogen

d)

phosphorus

35.

Which cycle DOESN'T have an atmosphere component (part)?

a)

carbon

b)

nitrogen

c)

phosphorus

d)

water

36.

Which one of these does not add CO2 to the atmosphere?

a)

cooking with gas

b)

planting trees

c)

burning wood

d)

riding in a bus

37.
Organisms that break down dead plants & animals and release nitrogen back into atmosphere...
a)
bacteria
b)
plants
c)
animals
d)
producers
38.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle
39.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle.
40.

Identify the cycle pictured.

a)

The Water cycle

b)

The Carbon cycle

c)

The Nitrogen cycle

d)

The Phosphorus cycle.

41.

Too much phosphorus in waterways (rivers, lakes) can lead to___________.

a)

eutrophication

b)

Nothing

c)

Death

d)

diseases

42.
This is released by the weathering of rocks.
a)
Carbon
b)
Oxygen
c)
Phosphorus
d)
Nitrogen

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