The cell wall is composed of two thin overlapping shells which fit together like a soap case in
A
Diatoms
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B
Dinoflagellates
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C
Euglenoids
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D
Protozoans
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Solution
The correct option is A Diatoms In diatoms, cell wall is made up of silica and cellulose and is present in the form of two overlaping shells, called epitheca and hypotheca. The arrangement of these two shells looks like a soap box.