Diatomaceous earth is formed by the group of irganisms popularly known as

Options

A. Producer-decomposer protists
B. Chief producers in the ocean
C. Jokers of plant kingdom
D. Devoid of proteins

Answer

**Step-by-Step Solution:**

1. **Understanding Diatomaceous Earth**: Diatomaceous earth is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder. It is formed from the fossilized remains of tiny, aquatic organisms known as diatoms.

2. **Identifying the Group of Organisms**: Diatoms belong to the kingdom Protista. They are a type of phytoplankton and are classified under the group known as chrysophytes.

3. **Characteristics of Diatoms**: Diatoms are unicellular eukaryotes that have a unique cell wall made of silica (silicon dioxide). This silica structure is what contributes to the formation of diatomaceous earth when these organisms die and their remains accumulate over time.

4. **Role of Diatoms in Ecosystems**: Diatoms are primary producers in aquatic ecosystems, meaning they are responsible for photosynthesis and serve as a vital food source for various marine organisms. They are found in both freshwater and marine environments.

5. **Conclusion**: Based on the information, the group of organisms that forms diatomaceous earth is the diatoms, which are a type of chrysophyte in the Protista kingdom.

**Final Answer**: Diatomaceous earth is formed by the group of organisms popularly known as diatoms.

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