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Ecology II
Test Description: Ecology
Instructions: Answer all questions to get your test result.
1) Which of the following compose an organisms niche?
A
All of these answers are correct
B
Diet
C
Role in the environment
D
Behavior
2) Why do humans need to be part of the nitrogen cycle?
A
Nitrogen is necessary to build carbohydrates & fats.
B
Nitrogen is necessary to build DNA & proteins.
C
Humans can make atmospheric nitrogen into a usable form for producers.
D
Nitrogen is necessary for energy transfer from secondary consumers to producers
3) Organisms that recycle elements back into the environment by breaking down dead organisms are:
A
primary consumers
B
producers
C
diatoms
D
decomposers
4) Which of the following levels of organization are in the correct order from largest to smallest
A
Individual, community, population, ecosystem
B
Indivudal, population, community, ecosystem
C
Ecosystem, individual, population, community
D
Ecosystem, community, population, individual
5) In a helathy environment, how does the number of producers compare to the number of secondary consumers?
A
More producers than 2nd consumers
B
Fewer producers than 2nd consumers
C
Depends on the number of decomposers
D
About the same
6) During the 1st round of food chain checkers, why was the simulated environment unbalanced?
A
The produers could not reproduce
B
Amount of 1st, 2nd, and 3rd level consumers were equal
C
Total number of consumers were greater than producers
D
All answers are correct
7) During the 2nd round of food chain checkers, what would have happened if the herring population increased dramatically?
A
All other organisms would increase initially.
B
Whale population increases, while copepod population decreases.
C
Copepod & whale populations would decrease.
D
Diatom population will increase, while whale population will decrease
8) What do the arrows in a food web represent?
A
Cellular respiration
B
Carrying capacity
C
Who eats who
D
Flow of energy
9) What role do producers play in the carbon cycle?
A
Converting carbon dioxide into a usable form of carbon for consumers.
B
Increasing the amount of carbon dioxide in the soil.
C
Releasing carbon dioxide after photosynthesis.
D
Converting carbon to nitrogen for the nitrogen cycle.
10) In a food pyramid, where can the carnivores be found?
A
Only the top level.
B
Every level above producer.
C
Every level above primary consumer.
D
All answers are correct.
*select an answer for all questions
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