Ecology LT 1-6 Retake Review
LT -1 I can distinguish between abiotic and biotic factors in an
ecosystem.
Matching
a. abiotic
b. biotic
____1. Drought
____2. Fish
____3. Trees
____4. Weeds
____5. Moss
____6. Climate
____7. Air temperature
____8. Water
LT – 2 I can define macro invertebrate and can explain how they are
used to determine water quality.
Use the bio assessment form in your composition book to complete the following for
each problem. Label your work.
a. Calculate the number of taxa for each group.
b. Calculate the index value for each group.
c. Calculate the cumulative index value.
d. Determine the water quality based on the assessment.
1. In a bio assessment sample there are: 4 caddisflies, 3 mayflies, 2 sowbugs, 3
crayfish, 5 riffle beetle, 2 aquatic worms, 1 stonefly, 4 hellgrammites, and 3
midges.
2. In a bio assessment sample there are: 2 scuds, 4 midges, 1 stonefly, 4 crayfish,
3 black flies, 2 crane flies, and 5 pouch snails.
LT – 3 I can identify a variety of pollutants, their sources, and the land use
associated with them.
Use your foldable to identify pollution problems associated with each land use.
1. List three problems associated with agricultural areas.
2. List three problems associated with residential areas.
3. List three problems associated with urban areas.
4. List 3 advantages of pristine land concerning water quality.
LT – 4 I can explain best management practices (BMP’s) and can explain
how their use can reduce human impact on water quality.
1. What bmp could a farmer use to reduce erosion after harvest? Describe how
this bmp works to reduce erosion.
2. What is a buffer strip? How does it help to control or reduce water pollution?
3. What bmp could a farmers use to keep livestock waste out of the water?
4. What are two different BMP’s that a homeowner could use to control excess
runoff around his house? Describe how these BMP’s work.
5. In an industry, what is the purpose of a holding pool?
6. What water quality problem can the use of landscape islands help?
LT – 5 I can classify common household substances as acids, bases, or
neutrals.
1. Classify the following substances as acids, bases, or neutrals. Place the
letter of each substance under the correct column. You may need to refer
to your “Color Changing Mixtures” sheet or your “How Does Our Water
Measure Up” sheet in your notebook.
A. distilled water
B. vinegar
E. soft drink
F. ammonia
ACIDS
C. lemon juice
G. pool water
NEUTRALS
D. baking soda water
H. tap water
BASES
Write the pH value for each of the following:
2. weakest acid
3. strongest acid
4. neutral
5. weakest base
6. strongest base
Matching
a. acid
b. base
c. neutral
____7. A solution with a pH of 5 would be classified as a(n) ___________.
____8. A solution with a greater concentration of hydrogen ions than hydroxide
ions would be classified as a(n) ______________________.
____9. A solution that has the same number of H+ ions as OH- ions would be
classified as a(n)___________.
___10. A solution that has a pH of 8 would be classified as a(n) ______________.
LT – 6 I can describe the pH range for natural waters and can determine
the impact on an ecosystem if pH changes.
1. What is the pH range for natural waters.
2. What is the pH range for bacteria?
3. What is the pH range for Plants?
4. What is the pH range
ge for mayfly nymphs?
5. What is the pH range for carp?
Created by Mary Beth Armstrong 2013