Question

characteristics of cyanobacteria


*Introduction ( Unicellular, Photosynthetic & True Prokaryotes which were previously known as Blue Green Algae )

*Habitat ( Exists as colonies of many shapes )

*Diverse Group ( Most diverse group of photosynthetic bacteria )

*Shape and Appearance ( They vary greatly in shape and appearance )

*Size ( Range in diameter about 1-10 micro meter )

*Mode of Occurance ( Exist in the form of filaments )

*Mucilaginous Sheath ( Their trichomes are surrounded by mucilaginous Sheath )

*Motility ( Lack flagella and often use gas vesicles to move in water, many have gliding motility )

*Cell Wall ( Gram Negative Cell Wall )

*Photosystem ( Resemble closely that of eukaryotes because they have chlorophyll a and photosystem II )

*Oxygenic Photosynthesis ( Carry oxygenic Photosynthesis, i.e.. use water as electron donor and generate oxygen during photosynthesis )

*Dark Reaction ( CO2 in them is assimilated through calvin cycle )

*Photogenic Pigments ( Located in thylakoid membranes )

*Reproduction ( Reproduce by asexually by binary fission and fragmentation )

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