Essential Macro and Micronutrients for Plants · NCERT Biology

Iron is absorbed by plants in the form of:

  1. Ferrous ions (Fe²⁺)
  2. Ferric ions (Fe³⁺)
  3. Elemental iron
  4. Iron oxide
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Correct answer: Ferrous ions (Fe²⁺)

Plants absorb iron primarily in the ferrous form (Fe²⁺). Although iron exists as Fe³⁺ in the soil, ferric reductase enzymes at the root surface reduce it to Fe²⁺ before uptake. Iron is essential for chlorophyll synthesis and electron transport.

Difficulty: Medium Question 10 of 20

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