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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
inhibits the spread of pathogens in algae colonies
B
allows more sunlight to be available to algae
C
increases the competition between different algae species
D
reduces the number of organisms that feed on algae
2) Which of the following statements regarding the nitrogen cycle is correct?
A
ammonia and carbohydrates are formed from nitrogen during lightning storms
B
Decomposers provide protein to the atmosphere
C
Nitrogen is never a component of organic molecules
D
nitrogen-fixing bacteria in the soil convert atmospheric nitrogen into a usable form for other organisms
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
organism, population, community, ecosystem
B
population, organism, community, ecosystem
C
population, organism, ecosystem, community
D
organism, community, population, ecosystem
4) Which of the following is most likely to cause the greatest disruption to an ecosystem?
A
emptying an aquarium containing non-native species into a local waterway
B
cutting down a small cedar tree to make holiday decorations
C
cleaning the windshield of a car with an alcohol-based glass cleaner
D
mowing the lawn in a city park
5) Which organisms directly help to reduce overpopulation in a deer herd
A
decomposers and comsumers
B
decomposers and predators
C
parasites and predators
D
parasites and scavengers
6) Eliminating microorganisms from an ecosystem would have all of the following effects EXCEPT
A
plants would be starved of key nitrogen-containing nutrients
B
decomposition would halt
C
increased carbon dioxide available to plants
D
food chains would be disrupted
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
an agricultural field that has not been plowed for one year
B
a newly formed volcanic island
C
a field that is regularly mowed
D
a temperate forest that has never been cleared by logging
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
plastics
B
antibiotics
C
fertilizer
D
yogurt
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
nitrogen fixing bacteria kill young trees
B
mosses replace flowering plants
C
grasses become diseased
D
larger plants become the dominant organisms
10) What is lost to the environment at each trophic level?
A
heat
B
carbon dioxide
C
oxygen
D
water
*select an answer for all questions
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