Survival Strategies in Different Species

Which of the following is a structure that helps a cactus survive in a desert environment?

• Broad, flat leaves

• Thick, waxy stem

• Webbed feet

• Sharp claws

What is the main function of a polar bear’s thick fur?

• To help it swim faster

• To keep it warm in cold environments

• To attract mates

• To help it climb trees

Which structure helps fish survive in water?

• Feathers

• Gills

• Fur

• Long legs

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Why do birds that live in the same forest have different beak shapes?

• To help them fly faster

• To help them eat different types of food

• To help them swim

• To help them sleep

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A rabbit has long ears and a fox has sharp teeth. How do these structures help them survive in the same environment?

• The rabbit’s ears help it find food, and the fox’s teeth help it run fast.

• The rabbit’s ears help it hear predators, and the fox’s teeth help it catch prey.

• Both help them climb trees.

• Both help them swim.

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NGSS.MS-LS4-4

In a pond, frogs have webbed feet and ducks have webbed feet. What is the function of this structure for both animals?

• To help them dig in the mud

• To help them swim efficiently

• To help them fly

• To help them climb trees

A forest has both deer and wolves. Deer have long legs for running, and wolves have sharp teeth for hunting. Explain how these structures help both animals survive in the same environment.

• Both use their structures to find water.

• Deer use long legs to escape predators, and wolves use sharp teeth to catch prey.

• Both use their structures to build homes.

• Both use their structures to eat plants.

Imagine a desert where both snakes and lizards live. Snakes have smooth, scaly skin, and lizards have legs and claws. How do these structures help them survive in the same environment?

• Snakes use their skin to fly, and lizards use claws to swim.

• Snakes use smooth skin to move easily on sand, and lizards use legs and claws to dig and climb.

• Both use their structures to eat plants.

• Both use their structures to make sounds.

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NGSS.MS-LS4-4

Two types of birds live in the same wetland: one has long legs and the other has webbed feet. How do these structures help each bird survive in the same environment?

• Long legs help one bird wade in deep water, and webbed feet help the other swim.

• Both structures help the birds fly faster.

• Both structures help the birds build nests.

• Long legs help one bird climb trees, and webbed feet help the other dig.

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NGSS.MS-LS4-4

In a grassland, both zebras and lions live together. Zebras have stripes, and lions have sharp claws. Explain how these structures help each animal survive in the same environment.

• Zebras use stripes to hide from predators, and lions use claws to catch prey.

• Both use their structures to eat grass.

• Zebras use stripes to attract mates, and lions use claws to climb trees.

• Both use their structures to swim.

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