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Download Problem Set 4
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Problem Set #4 (15 points) ECOL 340 Plant Form, Function & Diversity Spring 2007 NAME __________________________________________________ (1) Matching. (7 points) _____ Supply Function A. Minimize light limitations _____ CAM photosynthesis B. Leaves responde to ABA and leaf water potential _____ Acclimation C. Change in trait over generations _____ Anisohydric species D. Maximize carboxylation limitations _____ Photorespiration E. Carbon fixation/ calvin cycle spatially separated _____ Abscisic acid F. Causes higher compensation point in C3 plants _____ Shade leaves G. Limited by stomatal response to light and water _____ AOPT H. Lowers leaf conductance with carbon assimilation _____ Isohydric species I. Carbon fixation/ calvin cycle temporarily separated _____ Adaptation J. Decrease stomatal conductance _____ WUE K. Change in trait within hours _____ C4 photosynthesis L. Peak in net carbon assimilation rate _____ Acclimatization M. Found in mesic habitats _____ Sun leaves N. Change in trait within lifetime of plant (2) State whether the following characteristics are for a plant that is CAM or C4 or both (C4 and CAM), C3 or ALL (C3, C4 and CAM (1 point each). Fix CO2 using PEP carboxylase to create a 4 carbon sugar ___________ Accumulate malic acid in vacuoles ___________ Have increased CO2 in mesophyll cells relative to rest of cell ___________ Organic acids decarboxylated to produce CO2___________ Higher WUE and NUE ___________ Calvin cycle is used to make sugar from carbon dioxide ___________ Found in hot/dry, shady, high elevation and aquatic environments ___________ CO2 is assimilated in bundled sheath cells ___________ Fix CO2 using Rubisco to create phosphoglycerate ___________ Decreased stomatal opening during hot part of day ___________
