Question
Complete the following table by filling the blanks marked (A-F) below.
Essential element
Macro or Micro/ Region of requirement
Function
Dificiency
Boron
Micro/ apical leaves and seeds
Elongation of pollen tube
____ (A) ____
____ (B) ____
Micro/ whole plant
Involved in OXi-red reactions
Development of necrotic spots
Phosphorus
____ (C) ____
____ (D) ____
Structed plants
Magnesium
Macro/ growing areas of root and stems
____ (E) ____
____ (F) ____

Answer

Essential element
Macro or Micro/ Region of requirement
Function
Dificiency
Boron
Micro/ apical leaves and seeds
Elongation of pollen tube
Failure of root tips to elongate normally
Copper
Micro/ whole plant
Involved in OXi-red reactions
Development of necrotic spots
Phosphorus
Macro/whole plants specially in meristems
Key role in energy metabolism
Structed plants
Magnesium
Macro/ growing areas of root and stems
Acts as an activator of many enzymes
Interveinal chlorosis of older leaves.

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