Diatoms are placed under Kingdom Protista group:

AEuglenoids

BDinoflagellates

CSlime Moulds

DChrysophytes

Answer & Solution

Correct answer: D. Chrysophytes

Diatoms (and desmids) belong to Chrysophytes — golden algae. Their cell walls are silica-impregnated (forming 'diatomaceous earth' over geological time). Diatoms are the chief 'producers' in the oceans.

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