Patterns of Macroevolution

The flower developed a long flower to hold its nectar are the hummingbird in turn developed a long beak to get the nectar. This is an example of

• convergent evolution

• divergent evolution

• coevolution

Ostriches (birds) and giraffes (mammals) are both native to the savannahs of Africa.  They eat food that is high off the ground and share the same characteristic of an elongated neck.

• divergent evolution

• convergent evolution

• coevolution

The kit fox lives in the desert and has large ears with greater surface area that keep the fox from getting overheated.  The red fox lives in the forest and has a red coat that keeps it camouflaged.

• divergent evolution

• convergent evolution

• coevolution

Ants are the correct size and weight needed to open the flowers for the peony plant.  The peony plant provides food for the ant and the ant fertilizes the peony’s flowers

• divergent evolution

• convergent evolution

• coevolution

The hypothesis that evolution of a species occurs gradually over time as a slow and constant process is known as

• speciation
• punctuated equilibrium
• gradualism
• microevolution

Some scientists suggest that the mass extinction of dinosaurs resulted from sudden global weather changes caused by the impact of an asteroid on Earth. This event most likely promoted the evolution of new species of animals. What concept is best supported by these ideas?

• Punctuated equilibrium

• Use and disuse

• Gradualism

• Convergent evolution

A single species that has evolved into several different forms that live in different ways has undergone

• adaptive radiation.

• coevolution.

• punctuated equilibrium.

• mass extinction.

Answer explanation

Adaptive radiation is the correct answer. It refers to a single species evolving into different forms that live in different ways.

Birds, bats, and pterosaurs are unrelated, but they all developed wings to fly. This is an example of

• convergent evolution

• divergent evolution

• coevolution

All of these finches are related and came from a common ancestor, but they all developed different beak types based on what food was available. This is an example of

• convergent evolution

• divergent evolution

• coevolution

When two organisms evolve in response to each other, such as with bees and flowers.

• Coevolution

• Gradualism

• Sexual selection

• Divergent Evolution