Structures and Functions

Some animals, such as birds, have beaks, while other animals, like horses, have large mouths with flat teeth.

The difference in these structures is most closely related to ________.

• The sounds the animals make.

• The habitat the animals live in.

• The type of offspring they have.

• The types of food these animals eat.

The whiskers of a cheetah and the antennae of a beetle are shown in the photographs. 

How do structures like whiskers and antennae help organisms? 

• They help organisms stay warm.

• They help organisms eat food quickly.

• They help organisms defend themselves.

• They help organisms get information about their environment.

Which of the following statements is true about the structures of a giraffe?

• A giraffe has long legs to reach watering holes easily.

• A giraffe has a long tail to help guide him when he runs.

• A giraffe has a long tongue to reach the leaves of tall trees.

• A giraffe has a long mane down its neck to help it run faster.

Which of the following statements is true about the structures of a shark?

• A shark has slimy skin to glide through water.

• A shark has an extremely strong sense of smell to find prey.

• A shark has three extra fins to fight off predators.

• A shark has one set of baby teeth and one set of adult teeth to eat prey.

The spotted fur of a leopard and spotted skin of a leopard gecko are shown in the photographs. 

How do these body coverings help organisms survive in their environments?

• They help organisms find food.

• They help organisms look like another animal in its environment.

• They help organisms eat food quickly.

• They help organisms blend into their surroundings. 

When an animal blends in with its surroundings, it's using ___________.

• mimicry

• camouflage

• compression

• carnivore

Why do birds have different feet?

• They take in different amounts of oxygen, causing changes

• They are herbivores, so they have different feet

• To eat different foods in each habitat

• Feet adaptations allow them survive in different environments

The prickly pear cactus has _______ structures that protect it from plant-eating animals.

• Gills

• Thorns or Spines

• Heart

• Stem

A hummingbird’s _________ is long and straw-like so that it can sip nectar from inside flowers.

• Lungs

• Ears

• Beak

• Antennae

A scorpion uses a __________, found on the end of its tail, for paralyzing its prey and for defending itself.

• Jumping

• Teeth

• Brain

• Stinger