___ is often a major part of fertilizers since the plant cannot usually produce (or obtain) sufficient amounts. Which of these is not a recognized class of plant hormone?
Food
Sugars
Nitrogen
Potassium

The answer you are looking for is C. Nitrogen. Commonly found as Nitrite
(N3) or Nitrate (N2) nitrogen is a key element required by all life. Nitrogen is most often released back into the atmosphere by micro-organisms during the decomposition of organic matter, and into the ground through decomposition and defecation (Pooping).

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___ is often a major part of fertilizers since the plant cannot usually produce (or obtain) sufficient amounts. Which of these is not a recognized class of plant hormone? Food Sugars Nitrogen Potassium

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___ is often a major part of fertilizers since the plant cannot usually produce (or obtain) sufficient amounts. Which of these is not a recognized class of plant hormone?
Food
Sugars
Nitrogen
Potassium