PLANT PHYSIOLOGY
MINERAL NUTRITION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ferric ions
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Ferrous ion
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Either ferric or ferrous ions
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FeSO4
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Detailed explanation-1: -It is a macronutrient that is needed in large amounts for plant growth. Plants obtain it in the form of Ferric(Fe+3) ions. It is required for the synthesis of chlorophyll.
Detailed explanation-2: -Solution : Iron is absorbed by plants in the form of ferric ions.
Detailed explanation-3: -Iron consists of a flavoprotein portion. It is absorbed in the form of ferric ions and as opposed to other micronutrients, it is needed in larger quantities. It is often used in redox reactions due to the presence of two oxidation states. It also serves as a catalyst for chlorophyll synthesis.
Detailed explanation-4: -To be absorbed, iron must be in the ferrous (Fe2+) state or bound by a protein such as heme.
Detailed explanation-5: -Function of Fe in the Plant Iron is found in the iron-containing (heme) proteins in plants, examples of which are the cytochromes. Cytochromes are found in the electron transfer systems in chloroplasts and mitochondria. Iron is also associated with certain non-heme proteins such as ferredoxin.