- Analogy: endotherms consume more energy (food) than ectotherms; similarly, houses with AC consume more energy than those using external factors (wind, angle to sun rays, ...) (biomimicry) (high cost vs low cost)
- Insulation (cost), also clue for eco-housing
- That's why pothos variegated leaves show up when there is enough exposure to strong direct sunlight.
- That's why you have to stay hydrated when exposed to strong direct sunlight!
- That's why we can catch cold when we are exposed to cold temperature for a while.
- Hibernation: to escape the cost of endothermy.
- Humans have a built-in AC! endotherms (scientifically proven).
- Fat insulates heat loss, that's why fat people feel hot!
- That's why red cheeks in cold weather.
- Shade plants (that's why).
- Structure: Interesting, thoughts (do), summary; in paragraph form? (post Is on FB page/blog?
- Show diagrams (graphs) in plants course (to explain phenomena) (science).
- ectotherms: "rely on external sources of heat."; organisms that have the same body temperature of their environment; they acquire the temperature of the medium in which they live:
- a parasitic worm in the gut of a mammal
- a fungal mycelium in the soil
- a sponge in the sea
- endotherms: "regulate their temperature by the production of heat within their own bodies"
- "terrestrial organisms, exposed to the sun and the air, acquire heat directly by absorbing solar radiation or are cooled by the latent heat of evaporation of water"
- "the reflective, shiny or silvery leaves of many desert plants reflect radiation that might otherwise heat the leaves"
- "a lizard chooses to warm itself by basking on a hot sunlit rock or escapes from the heat by finding shade"
- insects: "bumblebees raise their body temperature by shivering their flight muscles"
- "birds and mammals use metabolic heat almost all of the time to maintain an almost perfectly constant body temperature"
- Heat loss in endotherms is moderated by:
- insulation in the form of
- controlling blood flow near the skin surface
- Endotherms pay the price of a large expenditure of energy to regulate their temperature. An even larger amount of energy is used outside the organism's thermoneutral zone.
- "The responses of endotherms and ectotherms to changing temperatures are not so different."
- Both are at risk of being killed by even short exposures to very low temperatures and by more prolonged exposure to moderately low temperatures
- Both have an optimal environmental temperature and upper and lower lethal limits
- There are also costs to both when they live at temperatures that are not optimal.
- Temperatures only a few degrees higher than the metabolic optimum are liable to be lethal to endotherms as well as ectotherms
- Ectotherms are not more primitive than endotherms.
- "Most environments on earth are inhabited by mixed communities of endothermic and ectothermic animals."
- endotherms: high cost–high benefit strategy
- ectotherms: the low cost–low benefit strategy
- What would it be like if humans were ectotherms?
- What are the advantages of ectotherms and the advantages of endotherms?
- Why are there ectotherms and endotherms, why not just one type?