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 their cell walls. 2. Cell [...]
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 organisms able to perform oxygenic [...]
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 not clear whether "mycoplasma” is [...]