Any mineral ion concentration that reduces that dry wt. of tissues by 10% is called as ___________(a) critical concentration(b) toxic concentration(c) beneficial concentration(d) optimum concentrationThis question was posed to me in class test.My question is from Mechanism of Absorption of Nutrients in division Mineral Nutrition of Biology – Class 11

Any mineral ion concentration that reduces that dry wt. of tissues by

1.	Any mineral ion concentration that reduces that dry wt. of tissues by 10% is called as ___________(a) critical concentration(b) toxic concentration(c) beneficial concentration(d) optimum concentrationThis question was posed to me in class test.My question is from Mechanism of Absorption of Nutrients in division Mineral Nutrition of Biology – Class 11
Answer» Correct choice is (b) toxic concentration To elaborate: Toxic concentration is the concentration that reduces the dry WT. of tissues by 10 PERCENT. Critical concentration is the concentration below which the growth of plant starts to retard. BENEFICIAL concentration is the concentration which is favorable for higher growth of plant. Optimum concentration is the concentration which should be MAINTAINED for stable growth of plant.

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