Download STUDY GUIDE #1 ECOSYSTEMS: HIERARCHY, CYCLES

STUDY GUIDE #1
ECOSYSTEMS: HIERARCHY, CYCLES, ENERGY FLOW
1. What is the difference a biotic and abiotic factor in an ecosystem? Be sure to give
examples of both biotic and abiotic factors.
2. What is a habitat? Be sure to give examples.
3. What is a species? Be sure to give examples.
4. What is a population? Be sure to give examples.
5. What makes up a community? Be sure to give examples.
6. What is the difference between a community and an ecosystem?
7. What is the definition of an ecosystem?
8. What kind of organism obtains energy only from producers?
9. What is a decomposer? Why are they important? Give examples of decomposers.
10. What trophic level is on the bottom of the energy pyramid? What are examples of
organisms that would be in that trophic level?
11. How much energy is passed on from one trophic level to the next in the energy
pyramid? Why?
12. What is the ultimate source of energy in the energy pyramid?
13. In a 4 level energy pyramid, what is the correct order starting from the bottom?
14. Which trophic level would have the least number of organisms?
15. What is the chemical equation for cellular respiration? What are the products?
Reactants?
16. What is the chemical equation for photosynthesis? What are the products?
Reactants?
17. What organisms go through the process of photosynthesis?
18. What does photosynthesis remove from the atmosphere?
19. What does photosynthesis release as a byproduct into the atmosphere?
20. What is responsible for making nitrogen in the atmosphere usable by living
organisms?
21. Which gas makes up 78% of our atmosphere, but can only be used by plants only
when transformed by bacteria first?
22. What converts nitrogen in the air into a form plants can use?
23. How are humans affecting the balance of carbon in the atmosphere?
24. Which nutrient cycle moves from an atmospheric gas to the soil through both
abiotic and biotic processes, moves through the food web, then is returned to the
soil or atmosphere?
25. What effect does deforestation have on the carbon cycle?
VOCAB WORDS
• Ecosystem
• Biotic factor
• Abiotic factor
• Organism
• Species
• Population
• Community
• Habitat
• Photosynthesis
• Producer
• Consumer
• Decomposer
• Cellular respiration
• Carbon cycle
• Nitrogen fixing bacteria
• Nitrogen cycle
• Phosphorous cycle