Which algae is used for the production of the insecticide 'Insecto'?
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Diatoms
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Rhodophyta
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Pyrrhophyta
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Phaeophyta
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Charophyta
A
Correct answer
Explanation
Insecto is a diatomaceous earth product isolated from diatoms and is used to control the insects, which have their soft body parts exposed but covered by a waxy film to prevent dehydration. When they came in contact with diatoms in Insecto, the silica frustule break the waxy film on the insects causing them to dehydrate and die.