Many Times Species Are Composed of Networks of Distinct Populations

question 43

Multiple Choice

Many times species are composed of networks of distinct populations called metapopulations.Metapopulations occur in areas where

• A)a population in better habitats continually sends out dispersers to bolster populations in poorer habitats.
• B)a population in poor habitat continually sends out dispersers to bolster populations in better habitats.
• C)a population in better habitats does not send out colonizers into poorer habitats.
• D)suitable habitat is patchily distributed and separated by areas of unsuitable habitat.

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Definitions:

Independent Variable

A variable that is manipulated to determine its effect on a dependent variable within an experimental study.

3-ethyl-3-methylhexane

A branched alkane with the formula C8H18, having an ethyl and a methyl group on the third carbon of the hexane chain.

Ethyl

A univalent radical, C2H5, derived from ethane and forming many compounds, used in chemical synthesis.

Methyl

A hydrocarbon group, CH3, often acting as a substituent in organic molecules.