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College Ecology Questions

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College Conservation and Biodiversity
To what does habitat fragmentation usually lead?
  1. decrease in biodiversity
  2. reduction in the number of introduced species
  3. increase in biodiversity due to the isolated populations
  4. increase in the number of introduced species
  5. more stable environment
College Biomes
The biosphere is                                                                                      .
  1. the layer where are all living organisms are found
  2. the gaseous layer that surrounds the earth
  3. the study of the patterns and relationships found in the biotic or living environment
  4. the interrelationships found in the living environment
College Succession
Which of the following best illustrates ecological succession?
  1. A mouse eats seeds, and an owl eats the mouse.
  2. Grass grows on a sand dune, is replaced by shrubs, and then by trees.
  3. Decomposition in soil releases nitrogen that plants can use.
  4. Overgrazing causes a nutrient loss from soil.
  5. Introduced pheasants increase, and native quail populations disappear.
College Biomes
Examples of lower latitude biomes are                               .
  1. tundra and boreal forest
  2. temperate and deciduous forest
  3. tropical rainforests
  4. none of these
  5. all of these
College Conservation and Biodiversity
We are usually referring to species diversity when we talk about biodiversity. However, genetic diversity is also important to ecological systems because diverse genes                                                                                   .
  1. increase the efficiency and productivity of a system because all niches are filled
  2. allow an individual organism to adapt to its changing environment
  3. are necessary for a population to evolve in a changing environment
  4. lead to diverse ecological processes in a biological community
  5. are important for a balanced ecosystem
College Symbiosis
Which of the following is not a type of symbiosis?
  1. Gradualism
  2. Commensalism
  3. Mutualism
  4. Parasitism
College Food Chains and Webs
College Biogeochemical Cycles
Why is ozone important to life on Earth?
  1. Is toxic to all forms of life
  2. Can be used in place of oxygen
  3. Blocks much ultraviolet radiation
  4. Provides energy to some basic forms of life
  5. Acts as a disinfectant
College Biomes
Temperate grasslands are unique because                                                     .
  1. of their seasonality
  2. the majority of their biomass is beneath the surface
  3. the majority of their biomass is above the surface
  4. they are influenced by Hadley cell circulation
College Communities, Populations, and Ecosystems
Which of the following is a good definition for ecology?
  1. The study of life
  2. Study of human interactions with matter and energy resources
  3. Study of embryo development
  4. Study of relationships between organisms and the environment
  5. Study of the classification or organisms
College Biomes
The biosphere is                                                                    .
  1. approximately 9.5 miles
  2. from the tops of the Himalayas to the bottom of the Marianas Trench
  3. no thicker than the skin of an apple, relatively speaking
  4. all of these
  5. only a and c
College Succession
                     is when a species colonizes an area with no life.
  1. Colonization
  2. Primary Succession
  3. Secondary Succession
  4. Succession
College Communities, Populations, and Ecosystems
College Biotic and Abiotic
Which of the following properties or processes are is not associated with living things?
  1. evolving populations
  2. maintenance of internal environment
  3. genetic information stored in proteins
  4. consist of cells
  5. extract energy from the environment
College Communities, Populations, and Ecosystems
College Conservation and Biodiversity
Endemic species are species that                                         .
  1. Suffer from a genetic disease
  2. Breed freely with other species
  3. Are not found anywhere else in the world
  4. Are on the verge of extinction
College Biomes
College Conservation and Biodiversity
What is biological diversity?
  1. the relative abundance of all species on Earth
  2. the adaptation of living things to their environment
  3. the variety of life forms on Earth
  4. the environmental variability of species
  5. the complexity of life forms on Earth
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