kingdoms of living organisms Free Essay, Term Paper and Book Report
Scientists have found and described approximately 1.75 million species on Earth. Plus, new species are being discovered every day. One way to make sense of it is by classification. Scientists put similar species into groups so that those millions of species do not seem so overwhelming. People rely on their knowledge of classification to understand what different species are like.
Monera
In the classification of living organisms, the group known as Monera contains the smallest and most abundant organisms on Earth, including bacteria and blue-green algae.
Monerans are the most primative, most members are characterized by a nucleus that is not distinctly separated from cytoplasm by a membrane (no true nucleus). All of these are single-celled prokaryote cells, the nucleus contains a single chromosome composed of deoxyribonucleic acid (DNA) and polyamines. Bacteria often have flagella by which to move. Most forms within this group reproduce asexually by means of binary fission of the cells.
They also include producers (photoautotrophs and chemoautotrophs) and decomposers (heterotr......
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