1. Which word is a form of symbiosis where one organism benefits and the other is unaffected?
A. Mutualism
B. Commensalism
C. Parasitism
D. Predation
2. Which word is a form of symbiosis where both organisms benefit?
F. Mutualism
G. Commensalism
H. Parasitism
J. Predation
3. Which word is a form of symbiosis where one organism benefits and the other is harmed?
A. Mutualism
B. Commensalism
C. Parasitism
D. Predation
4. Which of the following terms best describes all the white-tailed deer in a particular forest?
F. Community
G. Ecosystem
H. Individual
J. Population
5. Which term best describes the entire portion of the earth in which living things are found?
A. biosphere
B. biome

C. community
D. population
6. Which term best describes all the populations in a given area?
F. biosphere
G. biome
H. community
J. population
7. Which term describes all the plants, animals, and protists living in a forest?
A. Population
B. Community
C. Species
D. Phylum
8. What is the collective term for all the parts of earth in which life exists?
F. biosphere
G. biome
H. community
J. population
9. What ecological term describes "all the populations in a given area"?
A. biome
B. population
C. community
D. biosphere
10. Which pair best matches this pair of words? book – library
F. living – nonliving

G. organism – ecosystem
H. theory – law
J. hydrogen – oxygen
11. classroom : population :: school : ___________
A. organism
B. species
C. tissue
D. community
12. A rabbit’s grassland community includes —
F. field mice
G. rocks
H. warm spring temperatures
J. rainfall
13. Moving from the inner circle to the outer circle, with the inner circle representing the smallest group, which of the following is the correct order for the levels of organization within an ecosystem.
A. Community, Ecosystem, Organism, Population
B. Ecosystem, Organism, Population, Community
C. Organism, Population, Community, Ecosystem
D. Population, Community, Ecosystem, Organism

14. Soil contains both abiotic and biotic materials. Which is a biotic component of soil?
F. minerals
G. grains of sand
H. decomposing leaves
J. water
15. Which factor in a penguin’s environment is abiotic?
A. iceberg
B. killer whale
C. krill
D. phytoplankton
16. Choose the biotic factors shown in the picture.

F. water, grass, tree
G. sun, dead log, fungus
H. grass, rocks, sun
J. fungus, dead log, grass
17. Which is a large geographical area characterized by a specific climate and annual precipitation, dominated by a particular type of vegetation?
A. biosphere
B. biome
C. community
D. population

18. Which of the following terms would be a biotic part of an environment?
F. sunlight
G. dead fish
H. radiant energy
J. falling water
19. Which of the following is required for a healthy ecosystem?
A. Plants and soil only.
B. Plants and animals only.
C. Plants, animals, and decomposers.
D. Living things and non-living things.
20.
F.
G.
H.
J.

21. In which shaded section does an oak tree belong?
A.
B.
C.
D.
22. What word best replaces the X on the diagram?
F. abiotic
G. photosynthetic
H. biotic
J. chemosynthetic
23. In which shaded section do minerals belong?

A.
B.
C.
D.
24. What word best replaces the Y on the diagram?
F. abiotic
G. photosynthetic
H. biotic
J. chemosynthetic