CFU Dispersal and Vicariance

Name *

1. Describe why knowing the center of origin of a species is important in understanding dispersal or vicariance? *

1 point

2. Explain whether you believe that wolf species in North America are more a case of Dispersal or Vicariance. *

1 point

3. Identify Active Dispersal *

1 point

The voluntary movement of a taxa from one place to another under its own force

The movement of a taxa from one place to other under the force of some other physical or organic force (ie. Being blown by the wind with inability to change course or attached to the fir/feathers of another organism).

An infrequent, but long-distance movement of an organism in a short period of time. (ie. Most seen in colonization of newly formed islands).

The rapid diffusion (spread) of an organism from one area to another aided through the deliberate of non-deliberate actions of humans

Gradual diffusion of species from one area to another over a long period of time. Often taking place over the course of many generations (sometimes hundreds), species adaptations along the way will lead to the diversion of individuals along the way who adapt and develop into genetically unique species.

4. Identify Jump Dispersal *

1 point

The voluntary movement of a taxa from one place to another under its own force

The movement of a taxa from one place to other under the force of some other physical or organic force (ie. Being blown by the wind with inability to change course or attached to the fir/feathers of another organism).

An infrequent, but long-distance movement of an organism in a short period of time. (ie. Most seen in colonization of newly formed islands).

The rapid diffusion (spread) of an organism from one area to another aided through the deliberate of non-deliberate actions of humans

Gradual diffusion of species from one area to another over a long period of time. Often taking place over the course of many generations (sometimes hundreds), species adaptations along the way will lead to the diversion of individuals along the way who adapt and develop into genetically unique species.

5. Identify Passive Dispersal *

1 point

The voluntary movement of a taxa from one place to another under its own force

The movement of a taxa from one place to other under the force of some other physical or organic force (ie. Being blown by the wind with inability to change course or attached to the fir/feathers of another organism).

An infrequent, but long-distance movement of an organism in a short period of time. (ie. Most seen in colonization of newly formed islands).

The rapid diffusion (spread) of an organism from one area to another aided through the deliberate of non-deliberate actions of humans

Gradual diffusion of species from one area to another over a long period of time. Often taking place over the course of many generations (sometimes hundreds), species adaptations along the way will lead to the diversion of individuals along the way who adapt and develop into genetically unique species.