Biology I
Ecology Part II Vocabulary- (WORTH 2 GRADES)
*Ecology Part 2 flashcards are due by Wednesday, September 23rd.
*Ecology Part 2 Quiz is Friday, September 25th.
*Ecology Part 2 Test is Tuesday, September 29th.
Use the textbook to define the following terms and make flashcards. Some words may NOT be
highlighted or in bold.
1. Plant/herbivore –a relationship that
exist between plants and the animals
that eat them
2. Predation- pg. 431 (same as
predator/prey)
3. Competition- pg. 429
4. Cooperation- a relationship among
members of a species that helps one
another
5. Symbiosis- pg.432
6. Mutualism-pg. 432
7. Commensalism- pg. 432
8. Parasitism- pg. 432
9. Habitat pg. 428
10. Ecological niche pg. 428
11. competitive exclusion pg. 429
12. immigration pg. 440
13. Emigration pg. 440
14. Carrying capacity pg. 442
15. Limiting factor pg. 443
16. Population crash pg. 442
17. Primary succession pg. 446
18. Secondary succession pg. 447
19. Dynamic equilibrium- a state of
stability in an ecosystem when the
populations do not change very much
20. Pioneer species pg. 446
21. Nonrenewable resources pg. 485
22. Renewable resources pg. 485
23. Biodegradable- objects that easily
decompose in the environment
24. Algal bloom- an excessive growth of
algae due to fertilizer run-off
25. Conservation- preserving and restoring
natural habitats
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Pollution pg. 488
Smog pg. 488
Global warming pg. 492
Ozone layer – a layer in the upper
atmosphere that protects the earth’s
surface from UV radiation
CFC’s (chlorofluorocarbons)- a
compounds used in aerosol cans that
destroy the ozone layer
Biomagnification pg. 495
Introduced/invasive species pg. 500
Habitat fragmentation pg. 499
Climax community- the final
community in an ecosystem once it
becomes stable
Ponds are never be climax
communities.
Pioneer species are usually lichens.
Logistic growth- natural population
growth that follows an S-shaped pattern
Exponential growth- unrestricted
population growth that follows a Jshaped pattern
Population crash-pg. 442
Density dependent factors- limiting
factors that depend on the number of
organisms in a population; examples:
available food, water, habitat
Density independent factors - limiting
factors that do not depend on the
number of organisms in a population;
examples: natural disasters or human
activities