Which of the following elements is not required by plants for their normal healthy growth?

  • A
    Calcium
  • B
    Magnesium
  • C
    Lead
  • D
    Iron

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Minerals known to be required in large amounts for plant growth include

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Which element is a structural component of amino acids,proteins,hormones,chlorophyll,and most vitamins?

Which one of the following is not an essential mineral element for plants,while the other three are useful?

Which element is required by plants in large quantities?

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