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Ecosystem
Test Description: Ecosystem
Instructions: Answer all questions to get your test result.
1) Why do bears hibernate
A
to stay warm
B
a lack of food in winter
C
all possible answers
D
to conserve energy
2) What adaptations allows a polar bear to survive in its environment?
A
black eyes to see well
B
nose to smell
C
big body to blend in
D
thick, white fur to keep it warm
3) What is a food web?
A
a spider's home
B
a group of linked food chains
C
a pack of the same kind of animal
D
a group of like insects
4) Which are examples of abiotic factors of an ecosystem?
A
rocks, soil, lakes, sunlight, rain
B
soil, bacteria, sunlight, lakes, caves
C
rivers, streams, grass, mountains, sunlight
D
rocks, trees, rivers, fish, soil
5) What are primary consumers?
A
organisms that get energy from the sun
B
organisms that eat plants
C
organisms that eat dead organisms
D
organisms that eat plants and animals
6) How much energy is transferred at each tropic level?
A
100 percent
B
5 percent
C
10 percent
D
.10 percent
7) The organisms below are all decomposers except
A
mushroom
B
shrimp
C
worms
D
moss
8) Temperatures are similar all year; very humid; great variety of organisms; hot and wet
A
tropical rain forest
B
tropical dry forest
C
deciduous forest
D
tundra
9) Seasons are different; summers are very hot; dry year around
A
tropical rain forest
B
deciduous forest
C
tundra
D
desert
10) Warm year round with some water, dominant plant is grass
A
grassland
B
tundra
C
deciduous forest
D
tropical rainforest
11) Permafrost prevents roots of trees from growing; short growing season; only small plants
A
taiga
B
tropical rainforest
C
desert
D
tundra
12) Snow in winter; rain in summer; evergreen trees; often in high altitudes
A
coniferious forest / taiga
B
temperate grassland
C
deciduous forest
D
tundra
13) Largest biome; photic and aphotic zones; home of coral reefs
A
freshwater
B
marine
C
tropical rainforest
D
tundra
14) Seasons are different; trees lose leaves in cold; may have some coniferous trees
A
taiga
B
tundra
C
deciduous forest
D
grassland
15) Less than 2% of earth; not salty; can be standing or flowing
A
freshwater
B
marine
C
estuary
D
ocean
16) Which of these are a limiting factor in an ecosystem
A
all of the above
B
food
C
water
D
temperature
17) Which of the following is correctly arranged from lowest to highest trophic level?
A
grass, bass, minnow, snake
B
grass, mouse, snake, eagle
C
bacteria, eagle, frog, mushroom
D
algae, deer, hawk, bacteria
18) What is the ultimate source of energy in food chains
A
plants
B
the sun
C
producers
D
consumers
*select an answer for all questions
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