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WorksheetsFood Webs
Total questions: 10
Worksheet time: 12mins
Name
Class
Date
1.
Does this food web have arrows pointing the right way?
a)
Yes
b)
No
2.
Why is some energy not passed on to the next trophic level?
a)
The organisms at each level use about 90% of the available energy to live.
b)
The statement is NOT true. All energy IS passed from one trophic level to the next.
c)
The organisms at each level use about 10% of the available energy to live.
d)
Most energy is absorbed by the soil instead.
3.
The arrows in a food web…
a)
Point from predator to prey.
b)
Show the direction of energy flow in an ecosystem
c)
Always point from smaller to larger organisms.
d)
Always point from the larger to smaller organisms.
4.
Which of the following best describes the small bird in the food web above?
a)
primary and secondary consumer
b)
secondary and tertiary consumer
c)
primary consumer only
d)
secondary consumer only
5.
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.
6.
Which organism(s) in the food web above can be described as quaternary consumers?
a)
owl, mosquito and mouse
b)
mouse only
c)
small bird and owl
d)
owl only
7.
Which organism has the most energy and which organism has the least amount of energy? Choose the best answer.
a)
mosquito and grass
b)
mouse and grass
c)
grass and owl
d)
grass and small bird
8.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
9.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
10.
Does this food web have arrows pointing the right way?
a)
yes
b)
no
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