Understanding Evolution and Adaptation DVB

What is evolution?

• The process of animals becoming extinct.

• The way living things slowly change over a very long time to survive better.

• The sudden change in an animal's color.

• The way plants grow towards sunlight.

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What is natural selection?

• When animals choose their favorite food.

• When animals or plants with helpful traits survive and have babies, passing on those traits.

• When plants grow faster than animals.

• When animals migrate to warmer places.

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What is a common ancestor?

• A tree that grows in many places.

• An old living thing from the past that different animals or plants are related to.

• A type of bird found in many countries.

• A plant that grows in the desert.

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What is an adaptation?

• A special trait that helps a living thing survive where it lives.

• A new type of food for animals.

• A change in the weather.

• A type of clothing animals wear.

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What does the law of superposition help scientists understand?

• The order of layers in the Earth's crust.

• The speed of animal movement.

• The color of plant leaves.

• The height of mountains.

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What are homologous structures?

• Body parts in different animals that look similar but do different jobs.

• The same type of food eaten by different animals.

• The same color of fur in different animals.

• The same type of habitat for different animals.

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Which of the following is an example of homologous structures?

• The wings of a butterfly and a bird.

• The forelimbs of humans, bats, and whales.

• The fins of a fish and a dolphin.

• The eyes of a cat and a dog.

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How do scientists use fossils to learn about evolution?

• By painting them different colors.

• By studying the size and shape of the fossil’s bones, teeth, and other parts.

• By planting them in gardens.

• By feeding them to animals.

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What do scientists do when they compare fossils to other animals?

• They make a new type of animal.

• They compare the fossil to animals we already know about.

• They create a new habitat for the fossil.

• They use the fossil to predict the weather.

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Why do scientists look for similar traits in different species?

• To find new types of food.

• To show that the species might be related and share an ancestor.

• To create new species.

• To make animals look alike.

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