classification of cyanobacteria

Cyanobacteria - The group cyanobacteria includes another successful group of prokaryotes namely blue green algae. They are photoautotrophic prokaryotes occupying a wide range of habitats. They are predominantly aquatic, found mostly in fresh water bodies. Some species occur in m..

The group cyanobacteria includes another successful group of prokaryotes namely blue green algae. They are photoautotrophic prokaryotes occupying a wide range of habitats. They are predominantly aquatic, found mostly in fresh water bodies. Some species occur in marine water. A few are ter..

The micro-organisms like cyanobacteria (blue-green algae) and photosynthetic bacteria can also fix nitrogen. Some cyanobacteria also act as symbionts and are present in association with lichens; liverwort - Anthoceros; fronds of water fern - Azolla and roots of a gymnosperm - Cy..

Each cell whether in a unicellular form like Gleocapsa or multicellular form like Nostoc, has a definite cell wall. Most often it is surrounded by a thin or thick mucilagenous sheath. The inner layer of cell wall has a chemical composition similar to bacterial cell, made up of peptidoglycans. The c..

Question: Example of chemosynthetic bacteria are _____________. 1. E. coli 2. sulphur bacteria 3. cyanobacteria 4. nitrobacter Answer: ..

There are two basic types of cells found in living organisms - the prokaryotic cells and the eukaryotic cells. This classification is based on three main features, namely; Organisation of biomembranes Nature of cytoplasmic organelles and Arrangement of the nuclear material The prokaryotic..

Photoautotrophic organisms synthesize food with the help of light energy of the sun, carbon dioxide and water. The process of synthesis of food in this method is called photosynthesis, which will be dealt later in this chapter. For example: cyanobacteria (blue-green bacteria, prokaryote..

Earth is said to have been formed about4.8 billion years ago. Earliest earth was a hot revolving ball of gas. The formation of first cells in planet earth is explained by the theory of chemical evolution proposed by Oparin and Haldane, independently. According to this theory, the reducin..

Occur in ponds, lakes and fresh water bodies. Sea weeds are found in marine waters. May be single celled, colonial or filamentous. Are autotropic i.e., they can prepare their own food with the help of the green pigment i.e., chlorophyll present in the plant. Sometimes red, blue, yellow and ..

>Nitrogen fixation is primarily by symbiotic bacteria - Rhizobium or by free living cyanobacteria. For nitrogen fixation, a large amount of energy is derived from ATP molecules. The dinitrogen molecule is reduced to ammonia with the help of enzyme nitrogenase. The nitrifying bacteria conv..