Topic: Photosynthesis: site and pigments· Plant Physiology

In which of the following, all three are macronutrients ?

1. Boron, zinc, manganese

2. Iron, copper, molybdenum

3. Molybdenum, magnesium, manganese

4. Nitrogen, nickel, phosphorus

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 1 neet Save WhatsApp Report

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Answer: Dropped in the official answer key: full marks to every candidate

Key idea: Macronutrients are C, H, O, N, P, S, K, Ca and Mg. Micronutrients include Fe, Mn, Cu, Mo, Zn, B, Cl and Ni.

(1) B, Zn, Mn: all micro.
(2) Fe, Cu, Mo: all micro.
(3) Mo, Mg, Mn: only Mg is macro.
(4) N, Ni, P: N and P are macro, Ni is micro.

No option lists three macronutrients, so the question is flawed. The official key marks it as a multiple-answer (grace) question, so every candidate gets the marks: bonus.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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In which of the following, all three are macronutrients ?

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