Biology 2601A/B Lecture Notes - Lecture 3: Acer Rubrum, Latent Heat, Glossary Of Leaf Morphology
3 Dec 2016
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Adaptation genetically controlled trait through naturally selection has been modified to a higher frequency because it has some benefit in the population. Acclimatization response to environmental change => phenotypic plasticity; organism can use different parts of its genome to adjust to changing environmental conditions. Animal lives in south american cold waters; when temperature is about 7 degrees it spends under water; regardless its body temperature remains about 40 degrees => Going with the flow is better in some places than others. Input of energy: sunlight is absorbed by leaf. Output of energy: radiation loss, convection, sweat (transpiration) For ectotherms, the input and outputs should equal 0. Convection (h) heat loss can be regulated by leaf shape: how much of leaf is exposed; orientation. Conductance not an issue for plants because not much contact: plants mostly just try to pick up heat or loose heat. Latent heat exchange: transpiration water loss through evaporation from surface.
