tek 7.13(13) organisms and environments. the student knows that a living organism must be able to...
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TEK 7.13(13) Organisms and environments. The student knows that a living organism must be able to maintain balance in stable internal conditions in
response to external and internal stimuli. The student is expected to:
(A) investigate how organisms respond to external stimuli found in the environment such as
phototropism and fight or flight; and(B) describe and relate responses in organisms that
may result from internal stimuli such as wilting in plants and fever or vomiting in animals that
allow them to maintain balance.
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4.20.11 Word Wall TEK 7.13
• We will create a word wall for homeostasis TEK 7.13
• Warm up: Name the 4 ways we know there has been a chemical change:
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Homeostasis:
• a living organism must be able to maintain balance in stable internal conditions in response to external and internal stimuli
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Internal Stimuli:
• when an organism responds to an unbalance inside its self.
• Ex: vomiting, fever, wilting plant
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External stimuli
when an organism responds to its surround environment
EX: fight of flight or phototropism
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Fight of flight:
• if an organism feels threatened it responds with adrenaline, which prepares the body to fight or run away.
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Phototropism:
• when a plant grows towards the light source
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• Recall: stimuli is something an organism reacts to
• Summary: Explain what type of stimuli you are reacting to when you vomit and have a fever
• Out: Explain what type of stimuli a plant is reacting to when it wilts
** use complete sentences with capital letters, periods, and NO PRONOUNS! **
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4.19.11 Edusmart 7.13
• We will use edusmart to learn about stimulus and response and take a quiz
• Warm up: describe thedifference between stimuli andresponse
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• Recall: Phototropism is when a plant responds to the stimulus of light by growing towards the light source
• Summary: all organisms have to respond to stimuli in order to survive
• Out: Explain a situation where you think your body would go into fight or flight response. Do you think you would fight or flight, why?
** use complete sentences with capital letters, periods, and NO PRONOUNS! **
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4.25.11 Stimuli/response Lab
• We will conduct and investigation to understand stimuli and response.
• Warm up: This element has a high luster and is malleable… what type of element is it?
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• With a partner sort your cards into stimulus and response.
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• Complete each station. In your journal you need to record the following:
1)Lab name2)The problem/purpose3)Data chart and data collected4)Complete sentence answers to analysis
questions
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• Recall: organisms can respond to internal or external stimuli
• Summary: Reacting to an abiotic factor would be an example of what kind of stimuli? (use a complete sentence without pronouns)
• Out: Complete the chart with as many examples as you can think of:
External stimuli Internal Stimuli