..Il T-Mobile 10:12 PM learn.vccs.edu Name: BIO 101 SPRING 2018 Assignment 2 (10
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..Il T-Mobile 10:12 PM learn.vccs.edu Name: BIO 101 SPRING 2018 Assignment 2 (10 points) Direction: You should address the following questions, each stated clearly in a line or a paragraph. If you do not state each in a separate line or paragraph, you will lose points for not following my direction. You can use your text book or any other resources you might find. Must be Due next week 1) What are C3, C4, and CAM ? Define each. 2) What is photorespiration? - How does photorespiration affect the plant? 3) How do C4, and CAM P the problem of photorespiration? Explain. - You must include diagrams from any source showing forms of s in thses plants) 4) Give some examples of C3, C4, and CAM Plants among common and economic crops. (I would prefer if you present your answer clearly in a table format like the following): Alternative forms of Esamples among and feod crep C, C, CAMExplanation / Answer
1. The naming of C3, C4 and CAM plants is done on the basis of the kind of photosynthesis which they carry out. The C3 plants are those which carry out the Calvin cycle or reductive pentose cycle cycle or C3 cycle. Examples incude from the most primitive alga to the advanced angiosperms.
C4 plants include plants like sugarcane, maize, Sorghum where the first stable product that they form during the dark cycle of the photosynthesis is Oxaloacetic acid and the CO2 fixation occur in the mesophyll chloroplast followed by byndle sheath.
CAM plants fix CO2 into malate in the dark and store in vacuoles until daylight, when the stomata are closed thus minimising water loss and malate serves as a source of CO2 for rubisco. It includes the desert plants like cacti in dry areas.
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