Biology
Botany, Zoology & Genetics (HAU PYQ)
The first autotrophs on the earth were
Select the correct option (MCQ)
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Official Solution & Conceptual Rationale
CCS HAU B.Sc. Entrance Official Paper (PCB Set A)
Official CCS HAU key confirmed as option D. Aligned with NCERT Class 11-12 Biology and Plant Physiology.