1. Ecology Practice Test

2. 1. What chemical reaction releases the free energy of organic compounds for use by organisms?
Photosynthesis
Protein synthesis
Chemosynthesis
Cell respiration

3. 2. Which of these is a type of primary consumer in an ecosystem?
Carnivore
Detrivore
Herbivore
Omnivore

4. 3. Which kingdoms have members who are decomposers
3. Which kingdoms have members who are decomposers? Choose all that apply.
Monera (bacteria)
Protista
Fungi
Animalia

5. 4. In what way does deforestation contribute to the lack of nutrients available in soil?
the lack of tree roots won’t hold in soil, leading to soil loss
slash and burn agriculture returns nutrients to the soil
the lack of shading from the trees cause evaporation of water
decomposers will find other sources of organic matter to use

6. 5. All organisms contribute to the carbon cycle through the process of ___.
Protein synthesis
Cell respiration
Photosynthesis
Chemosynthesis

7. 6. After an organism dies, nitrogen is returned to the soil in the form of ___.
Nitrogen gas
proteins
Ammonia
nitrates

8. 7. Which one of these is a greenhouse gas? Choose all that apply.
Oxygen
Nitrogen
Water vapor
Carbon dioxide

9. 8. If an energy pyramid has a total of 500,000 calories at its base, how many calories are transferred to its TERTIARY consumers?
5000
500
25,000
2500

10. 9. Organisms store energy in the form of ___.
Chemical energy
Free energy
Heat energy
light

11. 10. Why are herbivores crucial to the success of ecosystems?
They are not eating up other consumers
They are able to transform organic matter into inorganic matter.
They are able to transform nitrates into proteins.
They are able to concentrate the proteins from producers.