Animal and Plant Homeostasis and Behavior

Which of these is an example of a plant responding to an internal stimulus?

• an apple on a tree ripening

• the stem of a sunflower bending toward light

• a leaf closing when a bee brushes against it

• the roots of a tree growing downward, in the direction of gravity

Which word best describes the response the seedlings are showing

• taxis

• tropism

• stimulus

• hibernation

As a frog develops from a tadpole to an adult frog, it goes through changes that are signaled by hormones within its body. For example, its tail disappears and it grows legs. Which best describes the role of hormones in changing a tadpole into a frog?

• The hormones are external stimuli.

• The hormones are threatening stimuli.

• The hormones are internal stimuli.

• The hormones blocks tadpole responses.

Dina is relaxing by walking her dog on a warm, sunny afternoon. Dina feels sweaty, and she sees that her dog is panting. Which is the most likely stimulus causing these responses in both Dina and her dog?

• hunger

• high temperature

• thirst

• light from the sun

Tags

NGSS.MS-LS1-8

Which body system involved in sensing the environment sends messages as electrical signals in response to stimuli?

• the endocrine system

• the nervous system

• the cardiovascular system

• the respiratory system

Tags

NGSS.MS-LS1-8

When a gazelle faces a hunger lioness, in a threatening situation it's fight or flight response displayed. Which of the following is NOT a way an organism reacts during fight or flight?

• a burst of energy and strength which allow the animal to fight or run away

• an organisms body relaxes and allows it to come up with logical options to react

• an organisms heart rate and anxiety increase

• an organism stands it ground and prepares to defend itself or it runs for safety immediately

The body's ability to keep the internal balance of the body stable 

• Homeostasis 
• motion
• geotropism
• phototropism 

How does the human body respond to hot temperatures?

• hibernates
• migrates
• sweats 
• shivers 

What is the internal stimulus that most likely causes a bear to try and catch a fish?

• protection

• thirst

• anger

• hunger

Kevin is walking around his home barefoot, as he goes into his little brother room he steps on a Lego. He screams in pain what kind of stimulus did he respond to?

• External

• Internal

• Hunger

• Screaming

Tags

NGSS.MS-LS1-8