Introduction to Ecology: Biodiversity, Ecosystems, Climate, and Population Growth

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Questions and Answers

What does 'density' refer to in a population context?

  • Statistical study of populations
  • Movement of individuals into a population
  • Measurement of population per unit area or unit volume (correct)
  • Number of individuals in an area

Which factor is known to increase as population size increases?

  • Immigration
  • Density-independent factors
  • Density-dependent factors (correct)
  • Emigration

What is 'dispersion' in the context of a population?

  • Spatial pattern of individuals in a population relative to one another (correct)
  • Movement of individuals out of a population
  • Number of individuals in an area
  • Statistical study of populations

'Demography' is the statistical study of _____.

<p>Populations (B)</p> Signup and view all the answers

What does biodiversity refer to in an ecosystem?

<p>Number of different species (D)</p> Signup and view all the answers

According to Sir Arthur George Tansley, what makes up an ecosystem?

<p>Both living and nonliving factors (B)</p> Signup and view all the answers

What distinguishes diversity of genes from genetic variability?

<p>Diversity refers to number of genes, variability to genetic characteristics (C)</p> Signup and view all the answers

What example best illustrates the diversity of ecosystems?

<p>Lakes, ponds, rivers, rocky coast, sand dune (A)</p> Signup and view all the answers

What is the meaning of the word 'Ecology'?

<p>The study of interrelationship of different organisms with each other and with their environment (D)</p> Signup and view all the answers

Why is it important for humanity to understand its environment according to the text?

<p>To prevent negative impacts from technology and overexploitation (C)</p> Signup and view all the answers

What does Biodiversity refer to from the text?

<p>The number of species in a specific region or ecosystem (A)</p> Signup and view all the answers

What are some dimensions mentioned in Ecology according to the text?

<p>Social, political, and economic (A)</p> Signup and view all the answers

Flashcards

Population Density

Measurement of population per unit area or volume.

Density-dependent factors

Factors that increase as population size increases.

Population Dispersion

Spatial arrangement of individuals in a population.

Demography

Study of populations.

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Biodiversity

Number of different species in an ecosystem.

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Ecosystem

Living and nonliving factors interacting.

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Genetic Diversity

Number of genes within a population.

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Ecosystem Diversity

Variety of ecosystems in a region.

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Ecology

Study of organisms and their environment.

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Environmental Understanding

Knowing how human actions affect nature.

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Human Impact on Environment

Negative effects of human actions on nature.

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Ecological Dimensions

Different aspects of a problem such as social, political and economical.

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