Ecology
Practice Test
Question #1
Which of the following are
heterotrophs? Write in ALL that
apply.
a) bacteria
b) mushrooms
c) plants
d) carbon dioxide and water
Question #2
If toxic soil leads to a lack of protein,
which stage of the nitrogen cycle is
not occurring?
a) N2  NH3
b) NH3  NO3
c) NO3  N2
Question #3
Which organisms convert inorganic
materials into organic materials?
a) producers
b) consumers
c) decomposers
d) all heterotrophs
Question #4
They convert nitrate into protein
a) producers
b) consumers
c) decomposing bacteria
d) non-decomposing bacteria
Question #5
There are 600 calories at the
secondary consumer level. How
many are at the producer level?
a) 6
b) 60
c) 600
d) 6,000
e) 60,000
Question #6
Which type of population growth results
when the births and immigration
equal the deaths and emigration?
a) exponential growth
b) population crash
c) logistic growth
Question #7
All organisms are
a) heterotrophs
b) producers
c) inorganic
d) organic
e) none of the above
Question #8
The purpose of the carbon cycle is to
make and recycle
a) glucose
b) oxygen
c) protein
d) inorganic materials
e) none of the above
Question #9
What do the arrows in a food web
represent?
Question #10
What do autotrophs provide heterotrophs
with? Write in all possible answers.
a) oxygen
b) carbon dioxide
c) proteins
d) glucose
Question #11
Explain how the carbon cycle is involved
in the greenhouse effect.
Answers
Answers
1.
2.
3.
4.
5.
B
B
A
A
E
6. C
7. D
8. A
9. Energy Flow
10. A, C, D