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; anddescribe 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 7.13We will create a word wall for homeostasis TEK 7.13Warm 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 stimuliwhen 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 feverOut: 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 7.13We will use edusmart to learn about stimulus and response and take a quizWarm up: describe thedifference between stimuli andresponse
10 Recall: Phototropism is when a plant responds to the stimulus of light by growing towards the light sourceSummary: all organisms have to respond to stimuli in order to surviveOut: 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 LabWe 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 nameThe problem/purposeData chart and data collectedComplete 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 stimuliInternal Stimuli