Review It 2!

Since the 1800s humans have stopped burning coal, and the trees have returned to their original color. Which moth will be more successful in this environment?

• Dark moth

• Light moth

• Both will be equally successful

• Neither will be successful

What process is being shown in this image?

• Variation
• Natural Selection
• Selective Breeding
• Homeostasis

Which best describes the role of mutations in natural selection?

• Mutations help an organism to better survive in their environment

• An organism may acquire a helpful mutation by interacting with the environment

• A mutation may result in an adaptive trait that makes an organism more likely to survive and reproduce

• Organisms with certain traits are more likely to win competitions for mutations

What are some things that can cause an animal to become endangered or extinct?

• habitat loss
• disease
• climate change
• all of the above

What is an adaptation?

• A feature or behavior that helps an animal survive.
• The food that an animal eats.
• How energy moves in a food web.
• How animals evolve throughout time.

Which of these is least likely to show common ancestry?

• homologous structures

• vestigial structures

• DNA

• analogous structures

How is genetic variation related to an organism's ability to adapt to its environment?

• When genetic variation is low, the ability to adapt is high
• When genetic variation is high, the ability to adapt is low
• When genetic variation is low, the ability to adapt is low
• Genetic variation is unrealted to the ability to adapt

Why is genetic variation within a species important for the survival of the species?

• It will likely result in larger individuals in the species.
• It will likely result in the species becoming predators.
• It will likely result in more intelligent individuals in the species
• It will likely result in individuals in the species being able to adapt to their environment.

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

Which best describes these fossils?

• The oldest fossils can be found on the lower layers
• The oldest fossils can be found at the top layers
• The youngest fossils are always found on the bottom layers
• You can not tell the age of any of these fossils