Natural Selection Quiz Review

What is natural selection?

• process in which helpful traits become more common over time

• a trait that helps an organism survive better

Adaptations can be:

• camouflage

• ability to survive cold weather

• hunting skills

• all of the above

Differences in traits are called:

• natural selection

• genetic variations

• artificial selection

• adaptations

A species could go extinct if:

• food becomes more plentiful.

• members of the species have adaptations to enhance survival.

• the environment changes drastically and no one can adapt.

• there is less competition for resources.

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial

Structures that are inherited from a common ancestor are homologous.

• True
• False

Analogous structures show common ancestry.

• True
• False

Both of these animals have fins. Are they considered homologous, vestigial, or analogous?

• Homologous

• Vestigial

• Analogous