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en.wikipedia.org/wiki/Diatom

Diatoms have two distinct shapes: a few (centric diatoms) are radially symmetric, while most (pennate diatoms) are broadly bilaterally symmetric. A unique feature of diatom anatomy is that they are surrounded by a cell wall made of silica (hydrated silicon dioxide), called a frustule.

sciencing.com/diatom-ecosystem-5157.html

Diatomaceous earth mined from these deposits has a wide variety of important industrial uses as a filter and abrasive; some organic gardeners employ it for pest control. Diatoms compacted beneath sediment may also, over time, become compressed to form oil, so diatoms are indirectly responsible for much of the fuel we burn in our cars today.

diatoms.org/what-are-diatoms

Diatoms are an important source of these energy rich molecules that are food for the entire food web, from zooplankton to aquatic insects to fish to whales. Diatoms are the most diverse protists on earth. Diatoms are eukaryotes, one of the Heterokont algae. Estimates of the number of diatom species range from 20,000 - 2 million.

diatoms.myspecies.info/node/8

What is a diatom and why are they important? 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 ...

www.answers.com/Q/Importance_of_diatoms

Diatoms refers to the groups of algae. The diatoms are very important because they are used to point out water pollution because of their ability to uptake and combine the inorganic and organic ...

quizlet.com/15956973/algae-flash-cards

Describe the ecological/economical importance of DIATOMS. They account for about 25% of total primary productivity on the planet! ... Describe the ecological/economical importance of RED ALGAE> Food - nori. Agar- used in labs. Describe the Morphology (cell wall structure, pigments) of GREEN ALGAE.

academics.smcvt.edu/dfacey/AquaticBiology/Freshwater Pages/Diatoms.html

The high reproductive rates of diatoms makes them respond quickly to environmental changes and many diatom species, as well, have specific tolerances for water quality. An important result of this research is that diatoms can be used to determine former water quality.

aaas.confex.com/aaas/2010/webprogram/Paper1743.html

Diatoms are unicellular eukaryotic microalgae that play important ecological roles on a global scale. Diatoms are responsible for 20% of global carbon fixation and 40% of marine primary productivity. Thus they are major contributors to climate change processes, and form a substantial basis of the marine food web.

www.britannica.com/science/diatom

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.

www.quora.com/How-are-diatoms-important-to-an-ecosystem

Diatoms are a type of algae (specifically, they belong to a superphylum Heterokonta) and the most common type of phytoplankton. When it comes to their ecology, they are opportunistic r-strategists, as they exhibit a boom and burst lifestyle. When ...