OCS 1005 Chapter : OCS 1005 Homework Chapter 12
15 Mar 2019
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Homework chapter 12 problems 1, 2, 4, 5, and 7. The three domains of life are archaea, simple microscopic bacteria-like creatures; bacteria, simple life forms consisting of cells that usually lack a nucleus; and eukarya, complex organisms(including plants and animals) consisting of cells that have a nucleus. The five kingdoms are monera, single-celled organism without a nucleus; protoctista single and multicelled organisms with a nucleus; fungi, mold and lichen; plantae, many celled plants; and animalia, many celled mammals. Marine organisms can be classified into one of three groups based on habitat and mobility. Plankton are free-floating forms with little power of locomotion; nekton are swimmers; and benthos are bottom dwellers. Plankton accounts for most of the biomass even though 98% of marine species are bottom dwelling. There are approximately 1,800,000 species on earth with 86% inhabiting land environments and.
