Discovery Ed Reading: Ecology Quiz

What does the term "ecosystem" refer to in ecological studies?

• The study of population dynamics

• All living organisms in a specific area

• The living and non-living parts of the environment

• A group of interbreeding organisms

What is a "population" in the context of ecology?

• A single organism in its natural habitat

• All members of a species in a community

• The study of animal behavior

• Non-living components of an environment

What information do ecologists gain from studying populations?

• Genetic variations among species

• The climate of the ecosystem

• Population size, density, and distribution of organisms

• The types of rocks in the environment

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Which factors can cause changes in population size?

• Natural processes and ecological issues

• Cultural influences and migration patterns

• Technological developments and innovations

• Historical events and discoveries

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Why are long-term studies important in understanding population changes?

• They help in short-term economic planning

• They assist in technological research

• They are crucial for determining the cause of population changes

• They are only useful for historical analysis

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What does the rate of increase of a population (r) depend on?

• The number of deaths only

• The average number of offspring and the average life span

• The environmental temperature

• The number of trees in the area

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What effect does increased population density have on resource competition?

• Decreases competition for resources

• Has no effect on competition for resources

• Increases competition for resources

• Only affects food availability

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Why do clumped distributions help individuals in a population? How does clumped distribution due to schooling behavior benefit individual fish in populations?

• They increase competition for resources.

• They help avoid predators and find mates.

• They decrease the survival rate.

• They have no impact on individual survival.

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What effect do plants with fewer competitors have on resources?

• They have decreased access to resources.

• They inhibit the growth of nearby plants.

• They produce fewer chemicals.

• They encourage the growth of other plants.

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What is the primary use of population demographics data by ecologists?

• To predict weather patterns

• To develop action plans for conservation

• To study economic trends

• To create educational content

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