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.

Some animals, such as wolves, have thick fur, while other animals, such as birds, have feathers.
The function of these body coverings is similar because of --

• their ability to hide from predators.
• the temperature of the environment they live in.
• their ability to attract the attention of the other animals.
• the types of food they 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 correctly describes the structure that helps this animal survive in its environment? 

• thick layer of blubber
• big furry ears
• a transparent eyelid
• the ability to change colors with the seasons

Which of the following statements is correct?

• 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 correct?

• 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.

Which of the following describes an adaptation of a lizard that helps it survive in its environment?

• A lizard has two sets of lips to help it retain water.
• A lizard has extra big feet to spread out the heat from the ground.
• A lizard has gills to breathe underwater when it floods.
• A lizard has a tail that breaks off so it can run away when grabbed by a predator.

The spotted fur of a leopard and spotted skin of a leopard gecko are shown in the photographs below. 
How do these body coverings help organisms 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. 

What part of the plant is this?

• roots

• seeds

• flower

• stem

What part of the plant is this?

• seeds

• leaves

• flower

• roots