Question

Which of the following statements is/are correct? (a)Moderate decrease or increase of micronutrients causes deficiency and toxicity symptoms respectively (b)Excess of manganese causes toxicity of iron, calcium and molybdenum (c)A macronutrient is said to be toxic when present below a critical concentration (1)Only(a)is correct (2)Only(b)is correct (3)(b)&(c)are correct (4)(a)&(c)are correct

Answer 1

Answer:1

Explanation: micronutrient required in very low conc 10mM/ kg of dry weight if conc is below and above this cause toxicity