Ecosystems Vocabulary

2. Multicellular organisms that move and consume other organisms.
7. Plants that do not have flowers.
10. Plants that have flowers.
12. Small prokaryotic organisms that outnumber all other life.
13. A group of organisms that live in the same area and interbreed.
18. Type of system that allows matter and energy to enter and exit.
19. Type of environmental factor that comes from living things.
20. Animals that do not have a spine.
21. Ultimate source of energy for most ecosystems.
22. Type of selection that drives the evolution of ecosystems.
24. Type of selection that is forced onto populations by humans.
25. Groups of populations that interact with each other in the same habitat.
26. Communities of organisms and their environment.
27. Type of environmental factor that does not come from living things.

1. One example of necessary abiotic factors that an ecosystem must have for organisms to survive.
3. Type of gas that must be present in an ecosystem for organisms to survive.
4. Plant-like, single celled eukaryotes.
5. Changes in a population over time.
6. Reproductive part of fungi.
8. Specific location where an organism lives.
9. Multicellular organisms that undergo photosynthesis.
11. Liquid that must be present in an ecosystem for organisms to survive.
14. Animal-like, single celled eukaryotes.
15. Multicellular organisms that are largely underground fiber networks.
16. Animals that have a spine.
17. Smallest unit of biological life.
23. Small prokaryotic organisms that can live in extreme environments.