Biology NEET Previous Year Question Paper NEET 2018 Previous Year Question Paper Single Correct MCQ
Published on: August 21, 2026

In which of the following forms is iron adsorbed by plants?

A
Free element
B
Ferrous
C
Ferric
D
Both ferric and ferrous

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The correct answer is:

                    

Plants absorb iron mostly in the form of ferric (Fe 34 ) ions (as per NCERT). However, plants in the acidic soil can absorb iron in ferrous (Fe 2+ ] as well as ferric (Fe 3+ ) form. Iron is reversibly oxidised from Fe 24 to Fe 34 during electron transfer.

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