Animal/Plant Structures, Functions, and Responses to Stimuli

Which organ senses noises that travel through the air?

• the mouth

• the ears

• the eyes

• the heart

Tom came home from work and asked his wife for a cup of hot coffee. When he took a sip, the coffee burned his tongue. Several days later, when he asked his wife for a cup of coffee, he first touched the cup with his hands to feel how hot it was. He then left it on the table for a few minutes to let it cool. Which of these best explains why Tom didn't drink the coffee immediately?

• Tom’s hands sent a message directly to his tongue, thus he did not drink the coffee immediately.

• Tom’s tongue sent a message directly to his hands, thus he did not drink the coffee immediately.

• Tom’s hands sent a message to his brain, which understood the message based on a stored memory, thus he did not drink the coffee immediately.

• Tom’s tongue sent a message to his brain, which understood the message based on a stored memory, thus he did not drink the coffee immediately.

A skunk uses its nose to smell a fox. The skunk is scared of the fox. When the fox gets near, the skunk lifts its tail and sprays the fox in the face with a liquid. The liquid has a very bad smell. The fox turns and runs away from the skunk.

Which of these describes a response of the skunk to sensory information processed by its brain?

• The skunk lifts its tail and sprays the fox in the face with a smelly liquid.

• The skunk is able to get away from the fox because the fox runs away.

• The skunk uses its nose to smell the fox.

• The fox runs away when the skunk sprays it in the face.

Tags

CCSS.RL.2.3

CCSS.RL.3.3

CCSS.RL.4.3

CCSS.RL.5.3

CCSS.RL.6.3

When your eye sees a pencil, it sends a signal to your brain. Your brain then signals muscles in your hand and arm, and you can reach and pick up the pencil.

In the process that was described, which was a sensory receptor?

• bone

• muscle

• eye

• brain

A circus performer was trying a new act of walking on a tightrope stretched between two poles. After a few practice sessions, he was able to do it perfectly. When he started performing the same act blindfolded, he lost his balance and fell down. Which of these best explains why he fell?

• His brain could not receive messages from his leg muscles, so he couldn’t tell that he had lost his balance.

• His eyes could not send messages to his leg muscles and help him keep his balance.

• His brain could not process the information being sent to it by his leg muscles.

• His eyes could not send his brain messages that would help it know how to keep him balanced.

A father bought a new singing toy for his baby girl. When a button was pressed on the toy, a song began to play and the baby smiled. What movement caused the baby’s behavior?

• The baby’s ears sent a message to her brain, which then sent a message to her facial muscles, causing her to smile.

• The baby’s eyes sent a message to her brain, which then sent a message to her facial muscles, causing her to smile.

• The baby’s ears sent a message directly to her facial muscles, causing her to smile.

• The baby’s eyes sent a message directly to her facial muscles, causing her to smile.

When Jack was learning how to drive, he was taught about basic traffic rules. On the day of his driving test, he saw a traffic signal that turned from green to red. As soon as it turned red, Jack quickly applied the brakes. Which of these best explains Jack’s behavior?

• Jack's eyes saw the light turn red and sent a message to his brain, which then sent a message to his leg muscles to apply the brakes.

• Jack's eyes saw the light turn red and sent a message directly to his leg muscles to apply the brakes.

• Jack’s brain understood when the light turned red and sent a message to his leg muscles to apply the brakes.

• Jack’s brain understood when the light turned red and sent a message to his eyes, which then sent it to his leg muscles to apply the brakes.

Frogs find insects to eat because they can see insects move. The frogs then stick out their sticky tongues and catch the insects.

Which of the senses do frogs use the most when finding insects to eat?

• hearing

• taste

• smell

• sight

Which system carries messages to and from different parts of the body?

• the circulatory

• the muscular system

• the nervous system

• the digestive system

Information about the world can be gained through the sense of touch. Which pathway correctly shows how touch information enters the body and is processed?

• skin > nerve endings > brain

• skin > brain > nerve endings

• nerve endings > skin > brain

• brain > nerve endings > skin