Chapter 1 Classifying plants and animals

A cell's nucleus contains a living thing's instructions called the

• manual

• answers

• DNA

• movements

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Which of these are classes of vertebrates?

• Birds

• Insects

• Mammals

• Reptiles

Answer explanation

How does a pine tree reproduce?

• Spores

• Cones

• Flowers

Answer explanation

People are mammals because we have

• Hair

• Nails

• Backbones

Answer explanation

Vascular plants have tubes that carry __________ and __________.

• nutrients

• air

• water

• sunshine

Answer explanation

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Mosses are short because they are vascular.

• True

• False

Answer explanation

These animals are all cold-blooded.

• Fish

• Birds

• Reptiles

• Mammals

Answer explanation

A mollusk is an example of an invertebrate.

• True

• False

A crab is an insect.

• True

• False

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Webbed feet is an example of

• instinct

• learned behavior

• an adaptation

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