WorksheetsEcology Review SB5b: Food Webs & Energy Pyramids
Total questions: 31
Worksheet time: 33mins
Name
Class
Date
1.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a ecosystem.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms.
d)
How carnivores get their food.
2.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
3.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
4.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
5.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
6.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
7.
Bears eat fish, insects, plants, seeds, nuts and young elk. They are called __________.
a)
Franivore
b)
Carnivore
c)
Herbivore
d)
Omnivore
8.
Lions only eat buffalo, antelopes, zebras and crocodiles. They are called __________.
a)
Omnivore
b)
Herbivore
c)
Carnivore
d)
Delivore
9.
If the grasshopper were to be removed completely from the food web, what organism would be most affected?
a)
The squirrel
b)
The shrew
c)
The deer
d)
The rabbit
10.
Which organism receives the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
11.
Which level will contain plants?
a)
A
b)
B
c)
C
d)
D
12.
Which level has the most energy available?
a)
producer
b)
primary consumer
c)
secondary consumer
d)
tertiary consumer
13.
How much energy is available to be passed on to the next trophic level in an ecosystem?
a)
100%
b)
10%
c)
50%
d)
75%
14.
In this food chain, the bacteria is most likely acting as a -
a)
predator
b)
competitor
c)
decomposer
d)
producer
15.
The grass that the mice eat contains energy. what is the source of energy for the grass?
a)
Rainwater
b)
The Sun
c)
The soil
d)
Minerals
16.
The deer, grasshopper, and bird are all examples of which type of consumers on this food pyramid?
a)
decomposers
b)
omnivores
c)
carnivore
d)
herbivore
17.
An animal that eats only other animals
a)
producer
b)
herbivore
c)
omnivore
d)
carnivore
18.
An animal that eats both plants and animals
a)
carnivore
b)
omnivore
c)
herbivore
d)
producer
19.
An animal that eats only plants
a)
omnivore
b)
carnivore
c)
herbivore
d)
fox
20.
Where do green plants get most of the energy they need to make their own food?
a)
carbon dioxide
b)
oxygen
c)
sunlight
d)
water
21.
What type of organism is at the beginning of every food chain?
a)
predator
b)
carnivore
c)
producer
d)
herbivore
22.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
23.
Identify the correct food chain that demonstrates the energy flow of this food web
a)
Plant > Caterpillar > Bluebird > Eagle
b)
Plant < Rabbit < Eagle
c)
Plant >Lizard > Snail >Eagle
d)
Eagle >Lizard>Caterpillar>Plant
24.
True or False. In this energy pyramid, the consumers on each level only get about 10 percent of energy that the trophic level before it has stored.
a)
True
b)
False
25.
A pyramid shape is used to show the amount of available energy at each trophic level because...
a)
energy decreases as you go up the food chain, just like the pyramid shape gets smaller as you go up.
b)
energy increases up the food chain just like the pyramid shape gets smaller as you go up.
c)
energy amounts are the same at each trophic level
26.
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.
27.
True or False: Organisms will always stay in the same trophic level.
a)
True-- an organism's trophic level is permanent based on the species it is.
b)
False-- the trophic level an organism belongs to is based on what it is consuming in the food chain.
28.
In this energy pyramid, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
29.
In this energy pyramid, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
30.
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
31.
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
100 %
