Which of the following groups of elements are mobile?

  • A
    $Fe, Ca, B$
  • B
    $Cl, K$
  • C
    $B, K, N$
  • D
    $Ca, Mg, P$

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Which element shows the given characteristics?
$(i)$ It maintains an anion-cation balance in cells.
$(ii)$ It is also involved in protein synthesis.
$(iii)$ It is required for the opening and closing of stomata.
$(iv)$ It is required for the maintenance of the turgidity of cells.

Choose the correct statement regarding the role of Iron $(Fe)$.

Which of the following is not a macro-nutrient?

Which mineral is associated with cytochromes?

Calcium deficiency results in the formation of an egg with

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