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Biology for AP® Courses

Review Questions

Biology for AP® CoursesReview Questions

1 .
What type of ecosystem is the rarest on Earth, among both terrestrial and aquatic exosystems?
  1. ocean
  2. freshwater
  3. grasslands
  4. tundra
2 .
If an ecosystem is considered to be highly resilient, what can be inferred about that ecosystem?
  1. The ecosystem is in a steady state.
  2. The ecosystem has the ability to remain in equilibrium despite disturbance.
  3. The ecosystem recovers quickly from disturbance.
  4. The ecosystem is exposed to disturbances.
3 .
What is a re-created ecosystem in a laboratory environment known as?
  1. mesocosm
  2. simulation
  3. microcosm
  4. duplication
4 .
A scientist wants to analyze how deer grazing alters plant species composition in a forest and sections off a portion of the forest for observation and analysis. What type of system is the scientist using?
  1. mesocosm
  2. simulation
  3. microcosm
  4. duplication
5 .
What term describes the use of mathematical equations in the modeling of linear aspects of ecosystems?
  1. analytical modeling
  2. simulation modeling
  3. conceptual modeling
  4. microcosm modeling
6 .
If a scientist constructs a flow chart to depict the interactions among species in an estuary, what kind of model is she creating?
  1. analytical model
  2. simulation model
  3. conceptual model
  4. microcosm model
7 .
What are usually the primary producers in an ocean grazing food web?
  1. plants
  2. animals
  3. fungi
  4. phytoplankton
8 .
Which of the following statements is true of trophic levels in an ecosystem?
  1. Food chains are accurate representations of dynamics in an ecosystem.
  2. In terrestrial ecosystems, primary producers commonly eat plants.
  3. Food webs are easier to interpret than food chains.
  4. The least amount of energy is available at the top of a food chain.
9 .
Where are coral reefs found?
  1. shallow ocean water
  2. deep ocean water
  3. deep ocean surfaces
  4. shallow freshwater
10 .
What is the weight of living organisms in an ecosystem at a particular point in time known as?
  1. energy
  2. productivity
  3. entropy
  4. biomass
11 .
(credit: modification of work from College of Arts and Sciences, Biology, University of Miami)

The image shows how a caterpillar uses energy.

What is the net consumer efficiency (NCE) of the caterpillar shown here?

  1. 67%
  2. 50%
  3. 34%
  4. 17%
12 .
What law of chemistry determines how much energy can be transferred when it is converted from one form to another?
  1. the first law of thermodynamics
  2. the second law of thermodynamics
  3. the conservation of matter
  4. the conservation of energy
13 .
What is the primary factor that limits the length of food chains in ecosystems?
  1. low energy transfer efficiency between trophic levels
  2. too much net primary productivity
  3. excess assimilation
  4. low gross primary productivity
14 .
What type of pyramid is considered the most representative of ecosystem structure?
  1. biomass
  2. energy
  3. number of organisms
  4. number of species
15 .
Why are the numbers of primary producers smaller than the number of primary consumers in the English Channel ecosystem?
  1. The primary consumers have a high turnover rate.
  2. The primary producers have a low turnover rate.
  3. The apex consumers have a low turnover rate.
  4. The primary producers have a high turnover rate.
16 .
What forms of life are found in areas where sunlight is unavailable and it is necessary to use inorganic molecules as an energy source?
  1. photoautotrophs
  2. chemoautotrophs
  3. primary consumers
  4. secondary consumers
17 .
What is the process whereby nitrogen is brought into organic molecules called?
  1. nitrification
  2. denitrification
  3. nitrogen fixation
  4. nitrogen cycling
18 .
Which of the following is a mechanism by which phosphorus is released into the environment?
  1. rock weathering
  2. decomposition of organic molecules
  3. plant activity
  4. geothermal vent activity
19 .
What is produced by eutrophication via excess nitrogen where a hydrologic reservoir lacks normal flora and fauna?
  1. fixation
  2. acid rain
  3. dead zones
  4. nitrification
20 .
What is a potential consequence of excess phosphorus and nitrogen in an ecosystem?
  1. This could result in increased global temperatures.
  2. Subduction can be promoted.
  3. These elements might be fixed in excess.
  4. A dead zone could be produced from depleted oxygen.
21 .
What term is given for freshwater that flows from rain or melting ice in the hydrologic cycle?
  1. residence time
  2. surface runoff
  3. evaporation
  4. sublimation
22 .
What most strongly influences how much carbon is present in a given location?
  1. number of bacteria
  2. runoff
  3. eutrophication
  4. atmosphere and water exchange
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