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Question


Plants usually require micronutrients in very low concentrations. However, if the concentration of micronutrients increases, it leads to ________.


Options:
A .   Toxicity
B .   Cell differentiation
C .   Cell elongation
D .   Deficiency symptoms
Answer: Option A
:
A
There are specific concentrations, below which the micronutrients are useful to the plants. However, beyond these critical concentrations, the micronutrients turn toxic to the plants and may cause a variety of symptoms. This is called as toxicity. The critical concentrations of each micronutrient is different for different elements. 

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