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TEK 7. 13(13) Organisms and environments

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Presentation on theme: "TEK 7. 13(13) Organisms and environments"— Presentation transcript:

1 TEK 7. 13(13) Organisms and environments
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: investigate how organisms respond to external stimuli found in the environment such as phototropism and fight or flight; and 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.

2 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:

3 Homeostasis: a living organism must be able to maintain balance in stable internal conditions in response to external and internal stimuli

4 Internal Stimuli: when an organism responds to an unbalance inside its self. Ex: vomiting, fever, wilting plant

5 External stimuli when an organism responds to its surround environment EX: fight of flight or phototropism

6 Fight of flight: if an organism feels threatened it responds with adrenaline, which prepares the body to fight or run away.

7 Phototropism: when a plant grows towards the light source

8 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! **

9 Edusmart 7.13 We will use edusmart to learn about stimulus and response and take a quiz Warm up: describe the difference between stimuli and response

10 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! **

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? Materials: flashlights, timing devices and masking tape

12 With a partner sort your cards into stimulus and response.

13 Complete each station. In your journal you need to record the following:
Lab name The problem/purpose Data chart and data collected Complete sentence answers to analysis questions

14 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


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