1. Unit 3 Lesson 4 What Are Structural Adaptations?
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2. Adaptations
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3. Unit 3 Lesson 4 What Are Structural Adaptations?
Staying Alive
An adaptation is any trait that helps a living thing to survive.
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4. Unit 3 Lesson 4 What Are Structural Adaptations?
Staying Alive
A horse has flat teeth that allow it to grind the grass that it eats.
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5. Staying Alive A tiger has sharp teeth that help it tear meat.
Unit 3 Lesson 4 What Are Structural Adaptations?
Staying Alive
A tiger has sharp teeth that help it tear meat.
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6. Unit 3 Lesson 4 What Are Structural Adaptations?
Staying Safe
A skunk’s spray has a bad odor. It’s a powerful defense against predators.
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7. Staying Safe One adaptation is fur color.
Unit 3 Lesson 4 What Are Structural Adaptations?
Staying Safe
One adaptation is fur color.
Snow hare is rusty brown in summer and in winter its fur turns white.
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8. adapted from http://gideon. k12. mo

10. Unit 3 Lesson 4 What Are Structural Adaptations?
Creature Costumes
Some animals can hide without trying. These animals are hidden by their shapes, colors, or patterns.
Such disguises are called camouflage.
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11. Unit 3 Lesson 4 What Are Structural Adaptations?
Creature Costumes
What color should this lizard be to camouflage with the leaf?
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12. Unit 3 Lesson 4 What Are Structural Adaptations?
Creature Costumes
Imitating the look of other animals is called mimicry.
Monarch butterflies make birds sick. Viceroy butterflies mimic them to prevent getting eaten.
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14. Unit 3 Lesson 4 What Are Structural Adaptations?
Plant Facts
Desert plants such as cactuses have thick stems that store water.
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15. Unit 3 Lesson 4 What Are Structural Adaptations?
Plant Facts
Plants need water. There isn’t much water in a desert, so desert plants are adapted to hold moisture.
Desert plants such as cactuses have thick stems that store water.
The leaves of many desert plants have a waxy coating that helps prevent water loss. Most desert plants have spines that help prevent water vapor from escaping from the plant.
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