Name: _________________________________ Date: _______________ Class: __________
Unit 1 Environmental Interactions Test Review
Biomes Matching
Match the letter of the characteristic on the right with the correct biome on the left. (there will
be more than one letter for each biome, but letters will only be used 1 time)
Biome
Tundra
Characteristic
A. Limited rainfall
D
_____
Q
_____
K
_____
Taiga
B. The soil is low in nutrients and high in acid.
C. Large leaves to collect sunlight
D. Permafrost--ground that is permanently frozen
B
_____
N
_____
R
_____
Deciduous Forest
F
_____
P
_____
L
_____
Grasslands
I
_____
E
_____
G
_____
E. Animals include badgers, coyotes and prairie dogs
F. Trees of this biome include maple, oak, hickory, and beech.
G. Biome with 4 definite seasons
H. Extremely short growing season
I. Biome dominated by grasses not large shrubs or trees
J. Biome that support the greatest biodiversity
K. Roots can extend great distances to reach water
L. Trees of this biome shed their leaves each fall.
M. Most nutrients in the soil are lost by the abundant rainfall
Desert
A
_____
K
_____
O
_____
Tropical Rain Forest
C
_____
M
_____
J
_____
N. Wide range of temperatures between winter and summer
O. Many animals are nocturnal due to harsh daytime conditions
P. Animals like squirrels, chipmunks, adopted to store food.
Q. Supports only plants with shallow root systems
R. Animals found in this biome include moose, deer & bobcats
2. If the trees from the taiga were removed from the biome, which atmospheric gas would
most likely
Decrease _________________________
Increase
_________________________
Ecological Succession
2. Sequence the events of ecological succession listed below by placing a 1,2,3 . . . in the
space provided at the beginning of each statement. The first one is done for you.
__1.__ Lichens and moss colonize newly exposed rock and then secrete acids.
______ Larger cracks form that can hold soil.
______ The largest cracks come together to form basins where trees can take root.
______ The acids cause cracks in the rock that widen due to freezing and thawing.
______ The soil supports the growth of grasses and small shrubs.
______ As the cracks widen, moisture is trapped and mosses begin to grow.
3. Based on the diagram on the right and your knowledge of
ecological succession, in the space below, explain how
species diversity of both plants and animals
increases from the pioneer through the climax
community.
4. Explain how a forest fire might lead to a rapid growth of small shrubs and grasses.
Food Chains and Webs
Be able to answer questions based on diagrams like the one in
the diagram on the right.
5. How many food chains are there?
6. Which organisms are herbivores?
7. Which organism is an omnivore?
8. Which organism is a carnivore?
9. Which organism is both a primary and secondary consumer?
10. Which organism is the producer?
11. What organism is missing from the diagram?
Ecological Pyramids
Base your answers to the following questions on the ecological
pyramid on the right.
12. What happens to the amount of energy transferred to
each successive level of the pyramid of energy?
How much energy is transferred?
________%
How much energy is lost as heat? ________%
13. What do we call organisms that occupy:
Level A _________________________ also known as Autotrophs
Level B _________________________ also known as Herbivores or Omnivores
Level C _________________________ also known as Carnivores or ___________
Level D _________________________ also known as ____________
Relationships in Nature
14. Describe a mutualistic relationship and give an example. Use the +, -, 0 system we
discussed in class.
15. Describe a parasitic relationship and give an example. Use the +, -, 0 system we
discussed in class.
16. Describe a commensalistic relationship and give an example. Use the +, -, 0 system we
discussed in class.
17. Use your knowledge of predator and prey
relationships to describe what you see happening
in the graph on the right.
Cycles In Nature
18. The diagram below represents the nitrogen cycle in a student’s aquarium. Ammonia,
nitrites, and, to a lesser degree, nitrates can be harmful to fish. The student wants to
keep the nitrogen in this aquarium cycling normally without having to continually change
the water.
Which of the following should
the student add more of to
help remove nitrates and
improve the natural cycling of
nitrogen in this aquarium?
A Fish
B Plants
C Nitrobacter
D Water
Explain your answer: