Evolution GRADED ASSIGNMENT

This is a process in which organisms gradually change over time.

• Environment
• Competition
• Evolution
• Fossils

This is an inherited trait that helps an organism survive and reproduce in its environment.

• Evolution
• Population
• Environment
• Adaptation

This is the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.

• Competiton
• Extinction
• Evidence
• Fossil

Sometimes bones in the front limbs of animals are very similar in structure. What do we call similar bone structures that indicate a link to a common ancestor?

• Adaptations

• Gradualism

• Homologous Structures

• Extinction

When looking at two birds of the same species, you notice that one has darker feathers than the other one. You also notice that one has a beak that is just a little longer. These slight differences within members of the same species are called.....

• Fossils

• Extinction

• Meiosis

• Variations

Birds are eating all the green beetles. Because the brown beetles are surviving they reproduce more and make more brown beetles. This is called ___________

• Artificial Selection

• The Theory on the Origin of Species

• Natural Selection

• Mutation

If scientists find fossils of a type of mosquito on the bottom layer and find fossils of beetles towards the top layer, what can scientists infer?

• Mosquitos ate the beetles

• Mosquitos are older fossils than beetles

• Beetles are older fossils than mosquitos

• Both mosquitos and Beetles must have lived at the same time.

When we examine this whale fossil, we can see that the whale has a pelvic bone that doesn't seem to be used by the whale. What do scientists infer?

• The whale had an ancestor with legs

• The whale must use the pelvis for an unknown reason

• The whale was born with an extra bone and has a disorder

• The whale had an ancestor with wings

Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

What is another name for natural selection?

• survival of the smartest
• survival of the fastest
• survival of the biggest
• survival of the fittest