Which of the following elements is not required by plants for their normal healthy growth?
A
Calcium
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B
Magnesium
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C
Lead
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D
Iron
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Solution
The correct option is C
Lead
Iron is a micronutrient required by plants. Calcium and magnesium are macronutrients required by plants. Both macro and micronutrients are essential for healthy growth of the plant. Lead is not required by plants for their normal healthy growth.