Unit 3 Lesson 4 What Are Structural Adaptations?
Copyright Houghton Mifflin Harcourt Publishing Company 1 Adaptations adapted from Unit 3 Lesson 4What Are Structural Adaptations?
Staying Alive An adaptation is any trait that helps a living thing to survive. Copyright Houghton Mifflin Harcourt Publishing Company 3 Unit 3 Lesson 4What Are Structural Adaptations?
Staying Alive A horse has flat teeth that allow it to grind the grass that it eats. Copyright Houghton Mifflin Harcourt Publishing Company 4 Staying Alive A tiger has sharp teeth that help it tear meat.
Unit 3 Lesson 4What Are Structural Adaptations? Staying Alive A tiger has sharp teeth that help it tear meat. Copyright Houghton Mifflin Harcourt Publishing Company 5 Unit 3 Lesson 4What Are Structural Adaptations?
Staying Safe A skunks spray has a bad odor. Its a powerful defense against predators. Copyright Houghton Mifflin Harcourt Publishing Company 6 Staying Safe One adaptation is fur color.
Unit 3 Lesson 4What Are Structural Adaptations? Staying Safe One adaptation is fur color. Snow hare is rusty brown in summer and in winter its fur turns white. Copyright Houghton Mifflin Harcourt Publishing Company 7 adapted from http://gideon. k12. mo Unit 3 Lesson 4What 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. Copyright Houghton Mifflin Harcourt Publishing Company 10 Unit 3 Lesson 4What Are Structural Adaptations?
Creature Costumes What color should this lizard be to camouflage with the leaf? Copyright Houghton Mifflin Harcourt Publishing Company 11 Unit 3 Lesson 4What 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. Copyright Houghton Mifflin Harcourt Publishing Company 12 Unit 3 Lesson 4What Are Structural Adaptations?
Plant Facts Desert plants such as cactuses have thick stems that store water. Copyright Houghton Mifflin Harcourt Publishing Company 14 Unit 3 Lesson 4What Are Structural Adaptations?
Plant Facts Plants need water. There isnt 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. Copyright Houghton Mifflin Harcourt Publishing Company 15