Question

'diatamoceous earth'is formed by organisms which are grouped under?​

Answer 1

Answer:

Diatomaceous earth is the fossil remain of the tiny organisms knows as diatoms. It is highly absorptive and made up of silica. Cells of diatoms are surrounded by the cell wall, having a higher concentration of silica called as frustules which are composed of two overlapping halves (the epitheca and the hypotheca). Shells of diatoms are highly resistant to decomposition due to the presence of silica and are deposited in ocean beds leading to the formation of the diatomaceous earth.

Answer 2

Organisms producing 'diatomaceous earth' are grouped under Protista kingdom, Chrysophyta division and Bacillariophyceae class.

• Diatomaceous earth is a deposition of silica, which comes form diatoms.
• It is also known as kieselgur or diatomite.
• Diatomaceous earth sedimentary rock containing high amount of silica which is crumbled into powder.
• Diatoms are unicellular algae that are present in oceans.
• The cell walls of diatoms do not undergo decomposition and hence, get deposited in the ocean beds.