Study Guide Chapter 21 Ecosystem
Ecology
biotic factors
biosphere
abiotic factors
ecosystem
1. _______________ ________________________ are nonliving things found in an ecosystem.
2. A system made up of interacting organisms and nonliving parts is an
_______________________________.
3. _________________________________ is the study of interactions in an ecosystem.
4. The part of the Earth where organisms live is the ___________________.
5. _______________________ _______________________ are the living part of an ecosystem.
Bacteria, populations, sunlight, always, biosphere, community, living space, water
6. Deserts, mountains and rivers are all parts of the ____________________
7. A ___________________________ is a group of _________________________
8. Seeds compete for __________________________, __________________, and
_______________________________________________________.
9. ______________________________ is a biotic factor in an ecosystem.
10. Ecosystems are ____________________________________________________ changing.
Limiting factor, population, biotic factors, abiotic factors, community
11. A group of the same species living in the same place at the same time is a
_________________________________________.
12. All organisms in an ecosystem are ___________________ ______________.
13. A ______________________________ ______________________ is something that limits the
size of a population.
14. _________________________ ______________________ include soil, air, and water.
15. All the populations living in an area is a ______________________________.
Producers, consumers, population, decomposers, vegetation, niche, community, ecosystem
16. A chipmunk in a forest is a member of a ______________________ , ___________________,
and a ______________________________.
17. A _____________________ is a role that an organism plays in an ecosystem.
18. In an ecosystem ______________________ and ___________________ are both biotic factors.
19. ___________________________________ is a biotic factor.
20. ______________________________ get their food by using dead organisms.
Short Answer:
21. How is the biosphere both an ecosystem itself and a collection of ecosystems?
22. Name 4 examples of ecosystems.
23. Name 2 examples of abiotic factors in a stream ecosystem.
24. What is the difference between a food chain and a food web?
25. Explain the following statement: All decomposers are consumers, but not all consumers are
decomposers.
26. What is the difference between a balanced ecosystem and an unbalanced ecosystem?
You will also be given a picture of an ecosystem and asked the following questions:
What are the biotic factors?
What are the abiotic factors?
What are the limiting factors?
What are the consumers?
How does a certain animal play the role of being a member of a community and a biotic factor?
Name 2 more roles that the animal can play. How?