Diatoms are classified as eukaryotes, organisms with a membrane-bound cell nucleus, that separates them from the prokaryotes archaea and bacteria. Diatoms are a type of plankton called phytoplankton, the most common of the plankton types. Diatoms also grow attached to benthic substrates, floating debris, and on macrophytes.
Diatom, (class Bacillariophyceae), any member of the algal class Bacillariophyceae (division Chromophyta), with about 16,000 species found in sediments or attached to solid substances in all the waters of Earth. Diatoms are among the most important and prolific microscopic sea organisms and serve directly or indirectly as food for many animals.
A diatom is a photosynthetic, single celled organism which means they manufacture their own food in the same way plants do. They are a major group of algae and form one of the most common forms of phytoplankton and join the myriad of organisms that drift on currents in the upper layers of the ocean and lakes. Diatoms live any and everywhere.
Diatoms constitute a major part of algae, and most of them are unicellular organisms. They occur in various forms: filamentous, fan-shaped, zigzag, and ribbon-shaped colonies, and they can be noticed easily in the freshwater and marine environment.
Diatoms are single-celled algae. Diatoms are algae that live in houses made of glass. They are the only organism on the planet with cell walls composed of transparent, opaline silica. Diatom cell walls are ornamented by intricate and striking patterns of silica.
Introduction. The diatoms are one of the largest and ecologically most significant groups of organisms on Earth. They are also one of the easiest to recognize, because of their unique cell structure, silicified cell wall and life cycle.
Diatoms are also used extensively in palaeoenvironmental studies particularly in palaeoceanography. Dissolution of diatom frustules during descent through the water column, on the sediment surface and during diagenesis may seriously alter the preserved assemblage by preferentialy dissolving more lightly silicified forms.
Diatoms. Algae are a very diverse group of simple, nucleated, plant-like aquatic organisms that are primary producers. Primary producers are able to utilize photosynthesis to create organic molecules from sunlight, water, and carbon dioxide.Ecologically vital, algae account for roughly half of photosynthetic production of organic material on earth in both freshwater and marine environments.
Diatoms are unicellular organisms, which are covered with a cell wall containing silica, which is called frustule. They belong to the major algal group that consists of many types of phytoplankton. These diatoms can exist in colonies, and form shapes like filaments, zigzag and stellated patterns, and ribbon-shaped colonies.
Diatoms capture solar energy and produce a quarter of our planet’s oxygen. Despite their tough, siliceous shells, these phytoplankton are abundantfood for copepods and are at the base of the marine food chain. Diatoms are single-celled organisms with nuclei and chloroplasts.