Focus On Earth Science: California Grade 6

Chapter 12: Ecological Roles

Standards Review

1.
Non-living physical features of the environment are called ________. 5.e
A)food chains
B)biotic factors
C)abiotic factors
D)carbon cycles
2.
Features of the environment that are alive now or once were alive are called __________. 5.e
A)abiotic factors
B)biotic factors
C)food webs
D)nitrogen cycles
3.
Which of these is an abiotic factor? 5.e
A)a raccoon
B)a beetle
C)a pine tree
D)sunlight
4.
Which of these affects the temperature of a region? 5.e
A)the amount of humus in the soil
B)the number of carnivores
C)photosynthesis
D)latitude
5.
A puddle is formed after a rainstorm. After two days of sunshine, the puddle disappears. What happened to the water? 4.a
A)It went through chemosynthesis.
B)It evaporated.
C)It oxidized.
D)It became a biotic factor.
6.
Which abiotic factor limits plant growth on the forest floor? 5.e
A)temperature
B)sunlight
C)air
D)water
7.
All of the goldfish in an aquarium would represent a(n) __________. 5.e
A)community
B)population
C)ecosystem
D)biome
8.
All the communities in an area and the abiotic factors that affect them would be called __________. 5.e
A)the biosphere
B)a population
C)a biome
D)an ecosystem
9.
Due to __________, populations cannot continue to grow larger forever. 5.e
A)habitats
B)limiting factors
C)symbiosis
D)limiting factors
10.
The water cycle involves the processes of evaporation, condensation, and __________. 4.a
A)photosynthesis
B)decomposition
C)precipitation
D)symbiosis
11.
The role that a species plays in a community is its __________. 5.c
A)niche
B)habitat
C)biotic potential
D)carrying capacity
12.
All the interactions in which an organism takes part make up its _______. 5.c
A)niche
B)community
C)population
D)ecosystem
13.
An organism's home is its _______. 5.c
A)territory
B)niche
C)environment
D)habitat
14.
Which of these is the most common way an organism can interact in a community? 5.c
A)An organism can depend on other organisms to build its home.
B)An organism can live with other organisms in a community.
C)An organism can serve as a source of food in a community.
D)An organism can reproduce with members of its community.
15.
Which of these biomes receives little annual precipitation? 5.d
A)taiga
B)tundra
C)temperate deciduous forest
D)grasslands
16.
Which of these animals might be found living in a taiga? 5.d
A)moose
B)kangaroo rat
C)zebra
D)spotted owl
17.
Which biome typically has four distinct seasons? 5.d
A)tundra
B)temperate rain forest
C)desert
D)temperate deciduous forest
18.
Which one of these is true of the tropical rain forest biome? 5.d
A)The soil thaws during the summer.
B)The soil contains permafrost.
C)The soil contains little dead vegetation.
D)The soil is thin and gravelly.
19.
Which of these biomes receives the least amount of rainfall every year? 5.d
A)tropical rain forest
B)desert
C)taiga
D)temperate deciduous forest
20.
Which plant is typically found in grasslands? 5.d
A)corn
B)rice
C)cactus
D)moss
Grade 6
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