The ultra-structural detail of a typical cyanobacterial cell (Fig. 6.10) is the following: 1. Mucilage Sheath: The cells and filaments of most cyanobacteria are generally surrounded by a mucilaginous sheath whose thickness, pigmentation, consistency, and nature is greatly influenced by environmental factors. It is considered that these microorganisms secrete the mucilage through pores present in […]
Ultrastructure of a Cyanobacterial Cell
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Cyanobacteria: Classification, Reproduction and Parasexuality
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In this article we will discuss about:- 1. Meaning and Characters of Cyanobacteria 2. Classification of Cyanobacteria 3. Reproduction 4. Parasexuality 5. Heterocyst 6. Economic Importance. Meaning and Characters of Cyanobacteria: The cyanobacteria (the earlier blue-green algae), or the blue-green bacteria, represent a group of photosynthetic, mostly photolysis-mediated oxygen-evolving monerans (prokaryotes). These are the only […]
7 Special Groups of Bacteria
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List of seven special groups of bacteria:- 1. Mollicutes 2. L-Forms 3. Rickettsia 4. Fastidious Vascular Bacteria 5. Chlamydias 6. Spirochaetes 7. Actinomycetes. Special Group # 1. Mollicutes (Mycoplasmas): The mollicutes represent a group of eubacteria. The common name for this group has traditionally been mycoplasmas. However, this usage invites confusion, since it is often […]
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