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NC Biology EOC Review: Ecosystems

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Name This Relationship: Humans and Lice

a)

Predation

b)

Competition

c)

Parasitism

d)

Commensalism

2.

Name This Relationship: Colobus Monkey and Fig Tree

a)

Predation

b)

Parasitism

c)

Commensalism

d)

Mutualism

3.

Name This Relationship: Brown Bear catching Salmon.

a)

Predation

b)

Competition

c)

Parasitism

d)

Mutualism

4.

Name This Relationship: Plants in a dense rainforest

a)

Predation

b)

Competition

c)

Parasitism

d)

Commensalism

5.

Name This Relationship: An egret looking for insects stirred up by the movement of the rhino.

a)

Competition

b)

Parasitism

c)

Commensalism

d)

Mutualism

6.

Which of the following organisms would be in the uppermost trophic level on a trophic pyramid?

a)

Eagles

b)

Grass

c)

Rabbits

d)

Fish

7.

Which of the following would NOT be an effect of factory runoff in a local stream?

a)

Increase in Biodiversity

b)

Extirpation of Sensitive Species

c)

Change in Water pH

d)

Increase in Algal Growth

8.
This diagram represents a closed terrarium exposed to sunlight. What must happen for the carbon cycle to continue in this terrarium?
a)
All organisms must continue to exchange gasses.
b)
The snails must double their production of carbon dioxide.
c)
The plant must produce carbon dioxide at a faster rate.
d)
The decomposers must begin to produce oxygen.
9.
Which statement best explains why animals are considered heterotrophic?
a)
They are able to produce food through the process of photosynthesis.
b)
They are able to produce food through the process of respiration.
c)
They are able to obtain nutrients by decomposing plant and animal tissue.
d)
They are able to obtain nutrients by consuming other organisms or their products.
10.
Which adaptation do ferns, gymnosperms, and angiosperms have that mosses do not have?
a)
chloroplasts
b)
flowers
c)
stomata
d)
vascular tissue
11.
In nature, which type of behavior causes animals to produce aggressive displays and sounds?
a)
imprinting
b)
territoriality
c)
conditioning
d)
habituation
12.
In some ecosystems, wolves have been eliminated due to their threats to humans. How can the reintroduction of wolves benefit the ecosystem?
a)
It can eliminate weak animals from a prey population, thereby decreasing competition for natural resources.
b)
It can eliminate the most fit animals among the prey population, which will cause an increase in birthrates of the prey.
c)
It can cause the prey population to migrate to other areas, resulting in more fit prey.
d)
It can cause the prey population to better blend in with their environment.
13.
Which graph best illustrates the growth of a population introduced into an environment with limited resources?
a)
A
b)
B
c)
C
d)
D
14.
What will most likely occur if the population of the world continues to increase at predicted rates?
a)
There will be an increase in biodiversity as a result of improvements in technology.
b)
Many organisms will lose their homes because their habitats have been destroyed.
c)
The human race will rapidly become extinct.
d)
All human diseases will be eliminated.
15.
What will most likely be the result as humans move into new areas, forests are clear cut and housing developments are built?
a)
Global temperatures will decrease because trees are removed.
b)
Many organisms will lose their homes because their habitats have been destroyed.
c)
Better sanitation in the area will reduce the amount of pollution.
d)
The rainfall in the area will increase because there will be increased runoff.
16.
Which will most likely result in a negative growth rate in the human population of a country?
a)
The death rate is higher than the birth rate.
b)
The birth rate is higher than the death rate.
c)
The country has improved economic conditions.
d)
The country has made improvements in sanitation.
17.
What will most likely happen if a nonnative species is introduced into a stable ecosystem?
a)
The native species will change their diet, and the ecosystem will remain stable.
b)
The native species will move to another area, and the ecosystem will remain stable.
c)
The native species will have to compete for resources with the nonnative species, and the ecosystem will become unbalanced.
d)
The native species will share their food with the introduced species, and the ecosystem will become unbalanced.
18.
What activity most contributes to the depletion of the ozone layer?
a)
burning fossil fuels
b)
release of CFCs
c)
deforestation
d)
overuse of fertilizers
19.
Why are many farmers encouraged to plant different types of crops on the same land throughout the year?
a)
It prevents insects from destroying crops.
b)
It provides more food to other countries.
c)
It allows for more genetic variation in plants.
d)
It helps to preserve the quality of the soil.
20.

A rose receives 10,000 Joules of energy from the sun. As the energy moves up the trophic levels, how much energy is left for the falcon?

a)

10,000 Joules

b)

1 Joule

c)

100 Joules

d)

10 Joules

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