Biology 2601A/B Lecture Notes - Lecture 3: Rete Mirabile, Poikilotherm, Encelia Farinosa
26 Oct 2013
School
Department
Course
Professor
Document Summary
Lecture 3: temperature ii plants and ectotherms. Constant body temperature that is well above its ambient surroundings is maintained despite the water temperature surrounding the organism. Ectotherm does not generate internal heat. Poikilotherm an animal in which the body temperature is determined by equilibration with the thermal conditions in the environment. No, they are not will be discussed throughout lecture as to why this statement is irrelevant: going with the flow is better in some places than others. L = latent heat exchange: transpiration, has to do with how much water is lost through the stomata. M = metabolism: metabolic heat generation in some plants. Minimizes amount of radiation hitting the surface, which minimizes the amount of energy gained, which keeps them cool useful for plants under drought. Rolling leaves and pointing them vertically reduces sun interception, saving water. To maintain body temperature, on average, the lizards choose specific areas.
