In which of the following forms is iron absorbed by plants

Options

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

Answer

D

Explanation

Plants obtain iron in the form of ferric ions `Fe^(3+)` . It is an important constituent of proteins involved in the transfer of electrons like ferredoxin and cytochromes. It is reversibly oxidised from `Fe^(2+)` to `Fe^(3+)` during electron transfer.