Mkayw
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can someone help me with this (true or false - need corrections)

- only endotherms maintain body temp by homeostasis
- ectotherms cannot detect changes in external temp
- both endotherms and ectotherms show behavioural responses to change in body temp
- only endotherms show physiological responses to change in temp
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jsg9
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- Edit: after thinking about it, both ectotherms and endotherms want to maintain homeostasis, but it's more of a state, not a mechanism. So you can say this statement is false. Sorry, using the word "by" confused me a bit lol.
- I wouldn't say ectotherms can't detect changes in external temp, they have to be able to in order to change their behaviour accordingly. I'd say second statement is false.
- Yes, both endotherms and ectotherms show behavioural changes in response, we're endothermic and put a jumper on similarly to how an ectotherm would move out of shade etc. This is true.
- Endotherms do show physiological responses to changes in temp through feedback loops, e.g. vasodilation/vasoconstriction, but ectotherms can have physiological adaptations too, e.g. the horned lizard can alter it's surface area by expanding or contracting its rib cage.

Hope that helps
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Mkayw
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(Original post by jsg9)
- Ectotherms do not regulate body temp by homeostasis, first statement is true.
- I wouldn't say ectotherms can't detect changes in external temp, they have to be able to in order to change their behaviour accordingly. I'd say second statement is false.
- Yes, both endotherms and ectotherms show behavioural changes in response, we're endothermic and put a jumper on similarly to how an ectotherm would move out of shade etc. This is true.
- Endotherms do show physiological responses to changes in temp through feedback loops, e.g. vasodilation/vasoconstriction, but ectotherms can have physiological adaptations too, e.g. the horned lizard can alter it's surface area by expanding or contracting its rib cage.

Hope that helps
wow, they're great answers
thanks.
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jsg9
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(Original post by Mkayw)
wow, they're great answers
thanks.
No problem. I made a change to the first answer though, I got thrown by the wording
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