Focus On Earth Science: California Grade 6

Chapter 12: Ecological Roles

Standard Assessment

1.
Food, water, and availability of oxygen and sunlight are known as __________. 5.e
A)abiotic factors
B)biotic factors
C)unlimited factors
D)limiting factors
2.
The place an organism lives is called its _________. 5.d
A)role
B)niche
C)habitat
D)camouflage
3.
Which biome is NOT found in California? 5.c
A)temperate deciduous forest
B)tundra
C)desert
D)grassland
4.
How does the water in clouds get to the ground? 4.a
A)It transpires and falls.
B)It evaporates and falls.
C)It condenses and falls.
D)It falls as runoff.
5.
Which is NOT a way humus helps plants grow? 5.a
A)It supplies nutrients to the plant.
B)It supports the plant.
C)It shades the plant.
D)It holds water.
6.
Which is the number of individuals of one species occupying the same area? 5.c
A)community
B)biotic factor
C)population
D)niche
7.
Which is a group of organisms that share similar characteristics and can reproduce among themselves producing fertile offspring? 5.c, 5.d
A)population
B)community
C)niche
D)species
8.
Why is there a greater variety of organisms in a rain forest than in a desert? 5.e
A)There are more plants for organisms to use as food.
B)Animals like warmer temperatures.
C)Organisms do not like sand.
D)Rain forests are older ecosystems, so they have more organisms.
9.
Which is NOT an abiotic factor? 5.e
A)soil
B)sunlight
C)temperature
D)plants
10.
In which of these biomes are fires and droughts common in California? 5.c
A)desert
B)grassland
C)taiga
D)temperate deciduous forest
11.
Which tells farmers and gardeners what kinds of plants can grow in their part of the country? 5.e
A)climate zones
B)humidity
C)precipitation
D)temperature
12.
Which describes a rain forest ecosystem? 5, 5.c
A)The variety of life is limited by the amount of available water.
B)The plant life provides food and shelter to a wide variety of insects, birds, and animals.
C)The ecosystem is always located along the coast.
D)The ecosystem receives very little sunlight in winter.
13.
Why are areas near the equator warmer than other areas of the Earth? 5.a, 5.e
A)Warm air flows away from the poles to the equator.
B)The equator is closer to the Sun.
C)The areas near the equator receive direct sunlight.
D)There are fewer trees near the equator.
14.
Which is a type of precipitation? 4.a
A)transpiration
B)runoff
C)groundwater
D)snow
15.
Which is the largest biome on Earth? 5.c
A)taiga
B)grassland
C)rain forests
D)tundra
Grade 6
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