Monera definition of Monera in the Free Online Encyclopedia.

Monera, taxonomic kingdom that comprises the prokaryotes (bacteria bacteria [pl. of bacterium], microscopic unicellular prokaryotic organisms characterized by the lack of a membrane-bound nucleus and membrane-bound organelles. Once considered a part of the plant kingdom, bacteria were eventually placed in a separate kingdom, Monera .
..... Click the link for more information. and cyanobacteria cyanobacteria (sī'ənōbăktĭr`ēə, sī-ăn'ō–) or blue-green algae,
..... Click the link for more information. ). Prokaryotes are single-celled organisms that lack a membrane-bound nucleus and usually lack membrane-bound organelles (mitochondria, chloroplasts; see cell cell, in biology, the unit of structure and function of which all plants and animals are composed. The cell is the smallest unit in the living organism that is capable of integrating the essential life processes. There are many unicellular organisms, e.g.
..... Click the link for more information. , in biology). They have a small ring of DNA as their genetic material and reproduce asexually. A recently proposed system classifies these organisms in two major groupings called Eubacteria and Archaebacteria Archaebacteria (är'kēbăktĭr`ēə)
..... Click the link for more information. , or archaea. Monera has been contrasted with the kingdoms of eukaryotic organisms (protists, fungi, plants, and animals; see eukaryote eukaryote (y
..... Click the link for more information. ).

Monera [mə′nir·ə]

(biology)

A kingdom that includes the bacteria and blue-green algae in some classification schemes.

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Monera