OCS 1005 : Exam 4 Study Guide OCS
15 Mar 2019
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Make sure that you study the powerpoint slides as you go through these subjects. Plants use sunlight as an energy source to fix carbon dioxide and nitrogen as they convert nonliving compounds into usable chemical forms of living tissue. Chemosynthesis is a process which does not require light to create carbohydrates but instead releases the energy held in the chemical bonds of hydrogen- and sulfur- containing compounds in order to construct glucose from carbon dioxide. Primary production- definition, unit of measure, mean value for ocean and land. What is major marine primary producer (base of marine food chain) and what percent of carbohydrates does this group produce? phytoplanton: 90-96% carbohydrates. Primary producers (pp) phytoplankton, multi-cellular algae, vascular plants. Pp of marine and terrestrial environments are similar if one averages over the entire globe, however turnover rates and biomass are very different at any one time. Marine environment has lower biomass but higher turnover rates = similar net primary productivity.
