पौधों की लम्बाई में वृद्धि – McqOptions

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1.	पौधों की लम्बाई में वृद्धि के लिए आवश्यक नहीं है -
A.	सोडियम
B.	कैल्सियम
C.	नाइट्रोजन
D.	फॉस्फोरस
Answer» B. कैल्सियम

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