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Category 5
Test Description: Based off of released EOC questions
Instructions: Answer all questions to get your test result.
1) The overgrowth of algae poses a major problem for coral reefs. Intensive fishing is one factor that contributes to algae overgrowth because it does which of the following?
A
increases the competition between different algae species
B
inhibits the spread of pathogens in algae colonies
C
reduces the number of organisms that feed on algae
D
allows more sunlight to be available to algae
2) Which of the following statements regarding the nitrogen cycle is correct?
A
Nitrogen is never a component of organic molecules
B
ammonia and carbohydrates are formed from nitrogen during lightning storms
C
nitrogen-fixing bacteria in the soil convert atmospheric nitrogen into a usable form for other organisms
D
Decomposers provide protein to the atmosphere
3) A science class is planning a field trip to a local farm that has a large pond. Which of the following lists the order of biological organization from smallest to largest that the students can expect to find in the pond?
A
population, organism, ecosystem, community
B
organism, community, population, ecosystem
C
organism, population, community, ecosystem
D
population, organism, community, ecosystem
4) Which of the following is most likely to cause the greatest disruption to an ecosystem?
A
mowing the lawn in a city park
B
cleaning the windshield of a car with an alcohol-based glass cleaner
C
cutting down a small cedar tree to make holiday decorations
D
emptying an aquarium containing non-native species into a local waterway
5) Which organisms directly help to reduce overpopulation in a deer herd
A
parasites and predators
B
parasites and scavengers
C
decomposers and comsumers
D
decomposers and predators
6) Eliminating microorganisms from an ecosystem would have all of the following effects EXCEPT
A
increased carbon dioxide available to plants
B
food chains would be disrupted
C
plants would be starved of key nitrogen-containing nutrients
D
decomposition would halt
7) As ecosystems move through the stages of succession, the populations of orgainsms in them change. Which of the following describes the stage of succession likely to have the most species diversity?
A
a temperate forest that has never been cleared by logging
B
a newly formed volcanic island
C
an agricultural field that has not been plowed for one year
D
a field that is regularly mowed
8) Some fungi secrete substances that are toxic to bacteria that compete with them for food. Scientists have used their knowledge of this ability of fungi in order to produce which of the following substances?
A
fertilizer
B
antibiotics
C
yogurt
D
plastics
9) How do an increase in the organic matter in soil and an increase in soil depth affect the population of plants in an area
A
grasses become diseased
B
larger plants become the dominant organisms
C
nitrogen fixing bacteria kill young trees
D
mosses replace flowering plants
10) What is lost to the environment at each trophic level?
A
oxygen
B
carbon dioxide
C
heat
D
water
*select an answer for all questions
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