Question

How is the process of carbon fixation in CAM plants different from the process in C3 and C4 plants?

Answer 1

C3 1.C3 plants are those that convert carbon to a compound containing three carbon atoms 2.They are found in a far broader range of environments 3.perform light independent reactions in the light, then the presence of light will have a considerable effect on the photosynthetic rates of these plants. 4.an obvious change in photosynthetic rate was observed 5.The enzyme that catalyzes the primary carbon dioxide fixation is Rubisco. 6.Present 7.respiration larger at high than at low temperatures. Ex----> rice, wheat, rye, barley, cassava, potatoes, algae, spinach, and yams 8.Not 9.C3 plants do not have C4 way. 10.C3 plants are slower to take in carbon 13, so their total biomass ranges from -22% to -35%, with a mean of -26.5%.
C4 1.They are called C4 because during the photosynthesis process, the plants convert atmospheric carbon into a chemical compound with four carbon atoms; 2.In general, plants which follow a C4 pathway originated in subtropical areas 3.perform light independent reactions in the light, then the presence of light will have a considerable effect on the photosynthetic rates of these plants. 4.an obvious change in photosynthetic rate was observed 5.The enzyme that catalyzes the primary carbon dioxide fixation is phosphoenolpyruvate carboxylase (PEPC). 6.Absent 7.C4 plants comes in useful under high light intensities Ex-----> maize, sorghum, sugarcane, millet, fonio, tef, papyrus. Not 8.C4 plants use a reaction way called C4 way. This reaction is followed by C3 way. C4 way provides more CO2 to the C3 way. 9.C4 plants absorb carbon 13 far faster than carbon 12, and so the total biomass of C4 plants ranges between -9 to -16%,
CAM 1.CAM is the abbreviation of Crassulacean acid metabolism. The name points at the fact that this pathway occurs mainly in Crassulacean species a. CAM plants are usually found in dry desert areas b.CAM plants are most common in arid environments, where water comes at a premium 2.light dependent reactions which occur during the day a. independent reactions which occur at night 3. If CAM plants perform light independent reactions exclusively in the dark, 4.the rate of photosynthesis in CAM plants remained constant 5.The enzyme that catalyzes the primary carbon dioxide fixation is phosphoenolpyruvate carboxylase (PEPC). 6.Photorespiration is not seen 7.influence in CAM plants regulated mainly by temperature, atmospheric humidity and salinity. 8.Ex---> cactuses,some orchids and bromeliads, Pineapple 9.CAM plants require less water. 10.CAM plants also use C3 and C4 ways. the difference is that the stomas of CAM plants are opened during night and CO2 is stored. 11.which can use either pathway for photosynthesis, and so have biomass values that can look like C3 or C4 plants

Answer 2

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