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WorksheetsStimulus & Response Review
Total questions: 60
Worksheet time: 31mins
Define homeostasis.
Maintaining an internal balance in a living organism.
The imbalance inside of an organism.
None of the above.
Check all that apply. Which of the following are examples of an organism maintaining homeostasis?
Shivering when cold
Sweating when hot
Fever - an immune response when sick
Vomiting - releases toxins and wastes
A stimulus is....
Change in an organism’s environment that causes it to react.
How the organism reacts to the stimulus.
A response is....
Change in an organism’s environment that causes it to react.
How the organism reacts to the stimulus.
External stimuli is....
stimuli happening outside of the organism.
stimuli happening inside the organism.
Internal stimuli is...
stimuli happening outside of the organism.
stimuli happening inside the organism.
The presence of food causes the dog to drool. What kind of stimuli is the food?
External
Internal
The weather temperature is cold outside and you start to shiver. Which part is the stimulus?
weather temperature
shivering
Weather temperature is an example of what kind of stimuli?
External stimuli
Internal stimuli
You are sick and have an upset stomach. You then vomit. Which part is the stimuli?
sick/upset stomach
vomiting
The weather temperature is cold outside and you start to shiver. Which part is the response?
weather temperature
shivering
You are sick and have an upset stomach. You then vomit. Which part is the response?
sick/upset stomach
vomiting
True or False: All organisms must maintain a stable internal balance in order to survive.
False
True
Is the stimulus internal or external? Feeling hungry
Internal
External
What type of stimulus?
The smell of pizza
Internal
External
Loud fire alarm
Increasing pH levels in blood
Decreasing body temperature
Lights suddenly turn off
Touch a hot skillet
Increasing blood sugar levels
Plants can detect gravity and respond to it. How do the stems respond to gravity?
The stems grow away from gravity
The stems grow toward gravity
The stems do not detect this stimulus
Plants can detect gravity and respond to it. How do the roots respond to gravity?
The roots grow away from gravity
The roots grow toward gravity
The roots do not detect this stimulus
Plants can detect light and respond to it. How do the stems respond to light?
The stems do not respond to this stimulus
The stems grow toward light
The stems grow away from light
Plants can detect light and respond to it. How do the roots respond to light?
The roots do not respond to this stimulus
The roots grow toward light
The roots grow away from light
Vines can detect touch and respond to it. How do their stems respond to touch?
The stems do not respond to this stimulus
The stems grow toward touch
The stems grow away from touch
Vines can detect touch and respond to it. How do their roots respond to touch?
The roots do not respond to this stimulus
The roots grow toward touch
The roots grow away from touch
Which situation best describes the act of maintaining homeostasis?
An organism sweating when their body temperature begins to rise
A plant on a window sill growing towards sunlight
A bear hibernating in the winter months
All of the above
Identify the response..."A plant's stem fighting against the force of gravity by growing upwards"
A plant stem
A plant stem fighting gravity
Gravity
Identify the tropism in the picture.
Positive Geotropism
Negative Phototropism
Positive Phototropism
Negative Gravitropism
Identify the tropism in the picture.
Geotropism
Positive Thigmotropism
Hydrotropism
Identify the tropism in the picture.
Positive Hydrotropism
Negative Phototropism
Positive Gravitropism
Positive Thigmotropism
Identify the tropism in the picture.
Positive Thigmotropism
Negative Thigmotropism
Geotropism
Negative Hydrotropism
Identify the tropism in the picture.
Positive Thigmotropism
Positive Hydrotropism
Negative Thigmotropism
Positive Geotropism
This system carries food, gases and wastes throughout the body
circulatory system
respiratory system
nervous system
