Amplify Evolutionarily History: lesson 1.3

What is the main reason blue whales are not considered fish?

• They have shiny scales.

• They are the largest animals on Earth.

• They are mammals, not fish.

• They live in the ocean.

What do fish have that whales do not?

• Milk production

• Lungs

• Live births

• Scales

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How do scientists determine the connection between two species?

• By their habitat

• By their color

• By comparing skeletons

• By their size

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What do mother whales and human mothers have in common?

• They lay eggs.

• They have scales.

• They produce milk.

• They have gills.

What evidence do paleontologists use to study extinct species?

• X-rays of living animals

• Live observations

• DNA from living animals

• Fossils

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What is a shared body structure an indication of?

• That species evolved from a common ancestor

• That species have the same diet

• That species live in the same habitat

• That species are the same age

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What did the common ancestor of whales and humans likely have?

• Scales

• Gills

• Wings

• Front limbs with a similar bone pattern

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Approximately how long ago did the common ancestor of all mammals live?

• 1 million years ago

• 100 million years ago

• 4 billion years ago

• 65 million years ago

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What is one function humans have lost but still have remnants of?

• Scales

• Claws

• Tail

• Gills

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What do all living things share?

• Ability to fly

• A common evolutionary history

• Feathers

• Ability to live underwater

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