Energy Flow Through Living Systems Exam Review 7th Science
Answer the following questions in your science journal.
1. What are the different parts of a food chain?
2. In what direction does the flow of energy move in a food chain? Name the
trophic levels in the correct order.
3. What is a food web?
4. Why are the organisms in a food web dependent on one another?
5. How does the amount of energy change at each trophic level? What
happens to the “lost” energy?
6. How do the different amounts of energy at each trophic level affect the
total biomass (number of organisms) at each level?
7. What is the ultimate source of energy for our earth? How is this energy
used by producers and what kind of energy is it transformed into?
8. Name the 8 main biomes found on earth. (Look in text) Be able to briefly
describe the characteristics of each.
9. What one factor tends to limit the distribution of plants and animals in a
given area?
10. Name several structural and behavioral adaptations that enable animals to
survive in cold winters.
11. Explain the % change in an amount of biomass as the composting process
occurs. What type of energy is lost to the surrounding atmosphere during
the composting process?
Define the following terms:
carnivore, omnivore, herbivore, scavenger, predator, decomposer,
ecosystem, food chain, energy pyramid, producer/autotroph,
consumer/heterotroph, primary consumer, secondary consumer,
tertiary consumer, Joule, biodiversity, biome, trophic level, compost,
biomass, thermal energy, bacteria, fungus,