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ExamsNEETBiology

The deficiencies of micronutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport:

  1. Co, Ni, Mo
  2. Ca, K, Na
  3. Mn, Co, Ca
  4. Cu, Mn, Fe

Correct answer: Cu, Mn, Fe

Solution

Copper, manganese, and iron are key redox-active micronutrients involved in electron transport chains. They are essential components of photosynthetic and mitochondrial electron carriers, so their deficiency most strongly disrupts both processes.

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