Download 7th Grade Science Formative Assessment #9 Multiple Choice

7th Grade Science
Formative Assessment #9
Multiple Choice
Directions: Identify the choice that best completes the statement or answers the question.
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1. The wrasse, a small marine fish, periodically cleans harmful parasites from the mouth
and body of the moray eel. The moray, in turn, protects the wrasse from larger predators
and provides it with a constant supply of food. This is an example of the type of
relationship known as
A.
B.
C.
D.
mutualism
parasitism
competition
commensalism
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2. In New York State, bluebirds and sparrows inhabit nearly the same ecological niche. In
many areas, bluebirds are being replaced by the sparrows as the result of
A.
B.
C.
D.
Symbiosis
Mutualism
Competition
Equilibrium
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3. Select the example of symbiosis, chosen from the list below that is best described by the
statement shown.
This relationship is an example of commensalism.
A.
B.
C.
D.
A tapeworm in a dog
Barnacles on a whale
Nitrogen fixing bacteria on the nodules of legumes
Protozoa within a termite’s digestive system
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4. The relationship between fleas and a dog is most similar to the relationship between
A.
B.
C.
D.
honeybees and a flower
orchids and a tree
nitrogen-fixing bacteria and a legume
athlete’s-foot fungus and a human
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5. Base your answer(s) to the following question(s) on the paragraph and your knowledge of
relationships among organisms.
Leeches often attach to the tongue of a crocodile and consume the crocodile’s
blood as food. The Egyptian plover is a bird that flies into the mouth of the
crocodile and eats the leeches. The crocodile do not harm the plovers.
For each relationship identified in the following questions, select the ecological term,
chosen from the list below that identifies that relationship.
Ecological Terms
(1)
(2)
(3)
(4)
(5)
Commensalism
Mutualism
Parasitism
Predation
Competition
The relationship between the crocodile and the leech
A.
B.
C.
D.
(1)
(2)
(3)
(5)
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6. The highest concentration of life exists in the top 200 meters of ocean water. The most
important factor that influences this concentration of life is the
A.
B.
C.
D.
Amount of sunlight.
Amount of gases at the surface.
Amount of nutrients in the water.
Large number of predators at lower depths.
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7. A wetland was drained to build a mall. Two years later, there were no more toads in that
area. Why did the toads disappear?
A.
B.
C.
D.
The toads died because toads cannot breathe out of water.
The toads were destroyed by the construction equipment.
The toads got their food from the wetland ecosystem.
The toads were frightened and went into the woods.
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8. In an investigation, yeast was grown in a nutrient culture that was maintained at a
constant temperature. After a few days, paramecia that feed on yeast were introduced
into the culture medium. The numbers of yeast cells and paramecia were determined
over a period of several weeks. A graph illustrating these data is shown.
What might occur if another species of paramecium that feeds on the same species of
yeast is introduced into the culture?
A.
B.
C.
D.
competition between the two species of paramecia
symbiosis between the two species of paramecia
an increase in the reproductive rate of the yeast
an increase in oxygen production by the yeast
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9. The graphs below show the annual number of AIDS deaths in the United States and
South Africa from 1999 – 2003.
What conclusion is best supported by the data in the graphs?
A. AIDS has been cured in the United States but not in South Africa.
B. AIDS has caused a greater population decline in South African than it has in the
United States.
C. The number of AIDS deaths in each country is solely responsible for the population
growth rate in each country.
D. The population in South Africa has increased regardless of AIDS, whereas the United
States population has decreased as a result of AIDS.
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10. The graph below shows how a white-tailed deer population recovered over a ten-year
period after a population crash.
Wolves in the same area feed primarily on deer. Which graph shows the most likely
change in wolf population for the same ten year period?
A.
B.
C.
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D.
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7th Grade Science Formative Assessment #9 Answer Key
Answer
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Benchmark
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Correct Answer
A
C
B
D
C
A
C
A
B
B
DOK
2
2
2
2
2
3
3
3
3
3
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