Giraffe Characteristics. The giraffe is the tallest living animal which is instantly recognizable by its exceptionally long neck. Adult males stand 15 â 19 feet (4.6 â 6.0 metres) tall, whereas females are shorter at 13 â 16 feet (4 â 4.8 metres) tall.
Bacterioplankton are bacteria and archaea, which play an important role in remineralising organic material down the water column (note that many phytoplankton are also bacterioplankton). Plankton are found throughout the oceans, seas and lakes of Earth.
From Wikipedia, the free encyclopedia. Bacillus megaterium is a rod-like, Gram-positive, mainly aerobic spore forming bacterium found in widely diverse habitats. With a cell length of up to 4 Âµm and a diameter of 1.5 Âµm, B. megaterium is amongst the biggest known bacteria.The cells often occur in pairs and chains, where the cells are joined together by polysaccharides on the cell walls.In the 1960s, prior to the development of Bacillus subtilis, B. megaterium was the main model organism among Gram-positive bacteria for intensive studies on biochemistry, sporulation and bacteriophages.. megaterium has been recognized as an endophyte and is a potential agent for the biocontrol of plant diseases. Nitrogen fixation has been demonstrated in some strains of B. megaterium.