Q.

A cell wall substance obtained from the following group of Protistans is gritty and used in polishing, filtration of oils and syrups. 

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a

Slime moulds 

b

Euglenoids

c

Dinoflagellates 

d

Chrysophytes

answer is D.

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Detailed Solution

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Diatomaceous earth obtained from the cell walls of diatoms is gritty and used in polishing and filtration of oils and syrups

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