Biogeography

Front

Which of these is the best definition of biogeography? Options: The study of how and why plants and animals live where they do., The study of how and why plants affect each other and the environment., The study of how and why plants evolve to compensate for changes in habitats., None of these are definitions of biogeography.

Back

The study of how and why plants and animals live where they do.

Front

All of today’s camels are descended from the same camel ancestors. These ancestors lived in ___________________.

Back

North America

Front

The biogeography of ______________ yields some of the best evidence for evolution.

Back

islands

Front

Which of these is the best definition of adaptive radiation? Options: The process by which a species changes to better fill an available niche. The process by which a single species evolves into many new species to fill available niches. The process by which a species becomes better suited for a niche than another forcing it to specialize or go extinct. none of these are definitions of adaptive radiation.

Back

The process by which a single species evolves into many new species to fill available niches.

Front

In the 1970s, biologists Peter and Rosemary Grant went to the Galápagos Islands. What did they observe?

Back

They were able to observe evolution by natural selection actually taking place.

Front

While the Grants were on the Galápagos, a drought occurred. As a result, fewer seeds were available for finches to eat. What happened to the beaks of the finches?

Back

Beaks became larger because birds with smaller beaks couldn't break the tougher seeds and died.

Front

The first camels lived about ______ million years ago.

Back

1

Front

This picture shows the various tortoise species of the Galapagos Islands. Notice that the shells of the tortoises differ from island to island. All these species evolved from a single species of tortoise. Which statement below is most true of these tortoises?

Back

This picture shows both biogeography and the adaptive radiation of the Galapagos tortoise.

Front

When looking at camel biogeography, it is clear that they evolved adaptations that suited them for the particular environment where they lived. Through natural selection, descendants of the original camel ancestors evolved the diversity they have today. True or False?

Back

True