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Questions  

Select the WRONG statement. 

a
Diatoms are microscopic and float passively in water.
b
The walls of diatoms are easily destructible.
c
'Diatomaceous earth' is formed by the cell walls of diatoms.
d
Diatoms are chief producers in the oceans.

detailed solution

Correct option is B

Walls of diatoms are indestructible as they are made of silica.

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