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Thermoregulation in Ectotherms and Endotherms

Explore the difference in thermoregulation between ectotherms and endotherms. Learn how they adapt to extreme temperatures and internal thermoregulation mechanisms. Improve your science vocabulary from KS4 to KS5. Discover the link to exothermic and endothermic reactions in chemistry.

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Thermoregulation in Ectotherms and Endotherms

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  1. Homeostasis Lesson 2: L.O: to describe the difference between thermoregulation in ectotherms and endotherms Starter: What does this picture tell you?

  2. Thermoregulation Improve vocab from Ks4 to KS5… Cold-blooded = ectotherm (Outside heat) Warm-blooded = endotherm (Inside heat) Link to chemistry, endo / exo thermic rxns

  3. Thermoregulation Improve vocab from Ks4 to KS5… Cold-blooded = ectotherm (Outside heat) All animal except birds and mammals are ecothermic Warm-blooded = endotherm (Inside heat) Link to chemistry, endo / exo thermic rxns

  4. Thermoregulation in Ectotherms Discuss: How could you regulate body temperature (thermoregulation) when you are exposed to extreme hot or cold environments?

  5. http://www.youtube.com/watch?v=brKwzg-Yiqw&feature=results_video&playnext=1&list=PL9314909C4A12754Dhttp://www.youtube.com/watch?v=brKwzg-Yiqw&feature=results_video&playnext=1&list=PL9314909C4A12754D

  6. Thermoregulation in Ectotherms • Behavioural mechanisms... E.g. take shelter / sunbathe • Evolutionary mechanisms… darker lizards in colder environments to absorb heat energy • Internal mechanisms… can respire to generate heat energy

  7. Thermoregulation in Endotherms Read the text and summarise how endotherms internally thermoregulate into this table: Boxes with ‘*’ must contain a physics keyword Extension: What behavioural and evolutionary mechanisms do birds and mammals have to help thermoregulation too?

  8. Draw a 3 x 3 grid and choose 9 of the following words: Insulation, radiation, evaporation, ectotherm, endotherm, hypothalamus, skin, vasodilation, vasoconstriction, behavioural, evolutionary, SA:V ratio, erector pili muscles, skeletal muscles, respiration

  9. http://www.youtube.com/watch?v=ZUsARF-CBcI

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