Nitrogen is a constituent of

  • A
    Chlorophyll
  • B
    Hormones
  • C
    Vitamins and amino acids
  • D
    All of these

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Which one is not an essential element in plants?

Which of the following is not a beneficial element?

Identify the elements which function as components of biomolecules.
$I.$ Hydrogen
$II.$ Magnesium
$III.$ Oxygen
$IV.$ Nitrogen

Essential mineral elements are . . . . . . .

Which among the following is the major constituent of proteins,nucleic acids,vitamins and hormones?

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