BIOL 1511 Lecture Notes - Lecture 19: Crassulacean Acid Metabolism, C4 Carbon Fixation, Gravitropism
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5. 01 plant and animal responses to the environment. Distinguish between the thermoregulators classified as endotherms and ectotherms, homeotherms, heterotherms, and poikilotherms. Explain the mechanisms that animals use to regulate their body temperature: including circulatory adaptations, metabolic activity, insulation, torpor, and behavioral adaptations exploiting the processes of conduction, convection, radiation, and evaporation. Describe the mechanisms used by plants to tolerate temporary drought and flooding. Describe the photosynthetic adaptations of c4 and cam plants to dry conditions. Environmental stress on plants changes; can be a part of homeostasis: drought; flooding; temperature extremes; salt, heavy metals; herbivores; pathogens. If the tip is covered, the plant will be unable to photosynthesize: experiment: create conditions which may vary the growth of the plant. Cover the tip in different pieces of paper or cloth (transparent or opaque) in order to test whether or not the plant continues to grow.
