Name: ________________________________
Period: ______
Ecology: Levels of Organization Vocabulary
Match the letter of the definition that best matches the term.
____ 1. Ecosystem
a. a large region of earth defined by its temperature and precipitation
____ 2. Biome
b. any living thing
____ 3. Biotic
c. the study of interactions of living organisms w/ each other & the environment
____ 4. Population
d. all of the populations AND abiotic factors in an area make up this
____ 5. Biodiversity
e. nonliving factors in an ecosystem
____ 6. Organism/individual
f. all of the different populations in an area make up this
____ 7. Community
g. an organism’s role or “job” in an ecosystem
____ 8. Ecology
h. living factors in an ecosystem
____ 9. Biosphere
i. anywhere on earth supports life
____ 10. Niche
j. all individuals of the same species in an area
____ 11. Abiotic
k. the variety of life forms in a given ecosystem
Write the numbers 1—10 next to the ecological levels of organization from smallest (1) to largest (10).
____ 15. Ecosystem
____ 20. Community
____ 16. Population
____ 21. Organ System
____ 17. Organ
____ 22. Tissue
____ 18. Cell
___ 23. Biosphere
____ 19. Organism/individual
___ 24. Biome
Write the vocabulary term that best describes each example.
Bison herd
25. _____________________________
Hawk, snake, bison, prairie dog, grass
26. _____________________________
Bison
27. _____________________________
Hawk, snake, bison, prairie dog, grass, stream, rocks, air
28. _____________________________