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Unit 8 Review

Total questions: 24

Worksheet time: 15mins

Name
Class
Date
1.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
2.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
3.
Where do all life forms get their energy?
a)
Earth's Core
b)
Water
c)
Plants
d)
The Sun
4.

All food chains begin with a ____________.

a)

primary consumer

b)

secondary consumer

c)

producer

d)

scavenger

5.
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
6.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
7.
In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?
a)
10%
b)
20%
c)
80%
d)
90%
8.
Organisms that breaks down and absorbs nutrients from dead organisms 
a)
consumer
b)
trophic level
c)
decomposer
d)
species
9.
In a simple food chain, small fish eat algae; bigger fish eat the smaller fish; bears eat the bigger fish. 
Using the above scenario, which of these would have the largest amount of energy?
a)
algae
b)
bears
c)
big fish
d)
small fish
10.
If 20,000 kcal is available to producers, how much is passed on to primary consumers?
a)
20 kcal
b)
200 kcal
c)
2,000 kcal
d)
20,222 kcal
11.
What do we call organisms that can make their own food?
a)
autotrophs
b)
heterotrophs
c)
carnivores
d)
omnivores
12.

In general, which level of a trophic pyramid would have the fewest number of organisms?

a)

primary consumers

b)

producers

c)

tertiary consumers

d)

secondary consumers

13.

Which one of these represents all living things on Earth?

a)

hydrosphere

b)

biosphere

c)

atmosphere

d)

geosphere

14.

Which of following does not cycle?

a)

Carbon

b)

Energy

c)

Water

d)

Oxygen

15.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
16.
The diagram below shows the cycling of nutrients in an ecosystem.
The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Inorganic nutrients
17.

The energy pyramid shows the amount of energy, in kcals, available in the organisms at each trophic level in an ecosystem. According to the law of conservation of energy, energy can neither be created nor destroyed. If this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?

a)

Energy is lost between each trophic level as heat.

b)

The law of conservation of energy does not apply to ecosystems.

c)

Organisms in the top of the energy pyramid use up energy the fastest.

d)

The extra energy in the bottom is slower to reach the top.

18.

Which of the following things increase biodiversity?

a)

Restoration

b)

Urbanization

c)

Combustion

d)

Disease

19.

Based on this food web, which animal below is receiving the most energy and biomass?

a)

Snake

b)

Fox

c)

Weasel

d)

Field Mouse

20.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
21.

Which of the following populations shows the most evenness?

a)

Plot 1

b)

Plot 2

c)

Plot 3

d)

They all show the same amount of evenness

22.

Which of the following populations shows the most richness?

a)

Plot 1

b)

Plot 2

c)

Plot 3

d)

They all show the same amount of richness

23.

Which of the following populations would have the highest Simpson's Index?

a)

Plot 1

b)

Plot 2

c)

Plot 3

d)

They would all have the same Simpson's Index

24.
Which organisms in the food web shown to the right are predators that compete for the same prey in this environment?
a)
Coyotes and rabbits
b)
White-tailed deer and rabbits
c)
Leafy weeds and cotton rats
d)
Bobcats and coyotes

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