Charles Darwin and Natural Selection

What creatures did Charles Darwin study at the Galapagos Islands that contributed to his theory of natural selection?

• Marine iguanas and cacti

• Tortoises and finches

• Penguins and sea lions

• Snakes and hawks

Which ship did Charles Darwin sail on during his voyage that led to his work on natural selection?

• HMS Challenger

• HMS Endeavour

• HMS Beagle

• HMS Victory

Evelyn, Avery, and Henry are discussing natural selection. They're trying to understand the truth about organisms and their offspring. Can you help?

• Evelyn thinks organisms produce fewer offspring than can survive.

• Avery believes organisms produce exactly as many offspring as can survive.

• Henry argues that organisms produce more offspring than can survive.

• They all agree that organisms produce offspring only when there is no competition.

According to natural selection, which group of animals is most likely to survive in the Amazon Rainforest?

• The group of animals least adapted to the environment.

• The group of animals best adapted to the environment.

• All groups of animals have an equal chance of survival regardless of their adaptation.

• Survival is determined by chance and not by adaptation.

How does variation occur according to natural selection?

• Parents pass identical traits to offspring without any variation.

• Parents pass traits to offspring but variations do not occur.

• Parents pass traits to offspring and variations occur due to mutation only.

• Parents pass traits to offspring but variations occur.

What is the term for the process by which traits become more or less common in a population due to consistent effects upon survival or reproduction?

• Genetic Drift

• Natural Selection

• Gene Flow

• Mutation

What did Charles Darwin observe about finches in the Galapagos Islands?

• They all had the same beak shape.

• Each island had its own unique species of finch.

• Finches from different islands could interbreed.

• Finches were not native to the Galapagos Islands.

According to the theory of natural selection, what happens to individuals whose characteristics are not well suited to their environment?

• They adapt to fit their environment.

• They are more likely to survive and reproduce.

• They are less likely to survive and reproduce.

• Their characteristics do not affect their survival.

______ exists among organisms

• competition

• friendship

• relationships

• fighting