Compare the mechanisms that C3, C4, and CAM plants use to obtain and use carbon dioxide. Why...

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Biology

Compare the mechanisms that C_3, C₄, andCAM plants use to obtain and use carbon dioxide.
Why would you expect photorespiration on a hot, dry day to occurless in C₄ and CAM plants than in C₃plants?

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Mechanism of C3 C4 and CAM are C3 PlantsThe majority of plant species on Earth uses C3 photosynthesisin which the first stable carbon compound produced contains threecarbon atoms that is 3PGAphosphoglyceric acid In this processcarbon dioxide enters a plant through its stomata microscopicpores on plant leaves where amidst a series of complex reactionsthe enzyme Rubiscomost abundant enzyme fixes carbon intosugarTrios phosphate through the CalvinBenson cycle Howevertwo key restrictions slow down photosynthesisStep1 Carboxylation when co2 fix with RUBP in the presence ofRUBISCO this step is known as fixation And first stable compound3PGA phosphoglyceric acid formStep2 Reduction In this step2 ATP amd one NADPH2 reduce Firststable compound 3PGA by giving electron Amd converted in ADP amdNADPStep 3 Regeneration In this step There is need to regenerateRUBP again by using one ATPC3 Cycle occur only in mesophyll cells of plant hence there isno special mechanismC4text C4C4start text C end text start subscript 4 endsubscript plants the lightdependent reactions and the Calvincycle are physically separated with the lightdependent reactionsoccurring in the mesophyll cells spongy tissue in the middle ofthe leaf and the Calvin cycle occurring in special cells aroundthe leaf veins These cells are calledbundlesheath cellsTo see how this division See Answer

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