A) as important as macro-nutrient but are required in small amount
B) less important than macro-nutrient
C) called micro as they play only a minor role in plant nutrition
D) none of the above
Correct Answer: A
Solution :
All elements found in plant are not essential for its growth and life cycle. There are two types of nutrients on the basis of their amount. (i) Macronutrients: The elements which required in major amount are called macronutrient eg, N, P, K, Ca, Mg, S etc. (ii) Micronutrients: The elements which required in small or trace amount are called micronutrient eg, Fe, Mn, Zn, Cu, Mo, B and Cl. Both macronutrient and micronutrient are important for plant but in different amounts.
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