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Energy Flow Through Ecosystem

Total questions: 17

Worksheet time: 34mins

Name
Class
Date
1.
What is a decomposer? 
a)
Organism that creates their own food.
b)
Organism that eat other organisms for energy
c)

Organism that break down dead organisms

2.
Who does the owl get energy from? 
a)

Grass

b)

Grasshopper

c)

Mouse

d)

Owl

3.
In this food chain, what will happen if the frogs become extinct?
a)
The snakes will increase.
b)
The grasshoppers will decrease.
c)
The eagles will remain the same.
d)
The grasshoppers will increase.
4.

An organism that can produce its own food through photosynthesis

a)
consumer
b)
heterotroph
c)
autotroph
d)
herbivore
5.
Energy increases as you move up the food pyramid (from bottom to top).
a)
True 
b)
False
6.

The fox in this food web would be considered a:

a)

Tertiary Consumer

b)

Producer

c)

Primary Consumer

d)

Quaternary Consumer

7.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
8.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
9.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?
a)
A
b)
B
c)
C
d)
D
10.

Using the food web which of the following is a primary consumer?

a)

butterfy

b)

snake

c)

fox

d)

frog

11.

The number of organisms at the top of the energy pyramid are usually smaller because the hawk

a)

needs more energy

b)

has more predators

c)

have more offspring

d)

eat producers

12.

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

13.
If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
14.
A food pyramid represent the relative amount of energy in trophic levels. Which of the following correctly shows a food pyramid?
a)
A
b)
B
c)
C
d)
D
15.
If only 10% of an organism's energy is available for the next trophic level, what happens with the other 90% of the energy?
a)
It is destroyed after it is used up.
b)
It is used for life processes or lost as body heat.
c)
It remains for the next trophic level IF the predator consumes ALL of the organism.
d)
It is lost completely as body heat. 
16.

If the phytoplankton in the energy pyramid in the figure have 20,000 kcal of energy, how much energy does the mackerel have?

a)

20.000 kcal

b)

2,000 kcal

c)

1,000 kcal

d)

20 kcal

17.

If the crustaceans in this energy pyramid have 1,000kcal of energy, how many calories of energy will the sharks have.

a)

500 kcal

b)

100 kcal

c)

10 kcal

d)

1 k cal