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The concentration below which growth is retarded is the:
ACrucial concentration
BCentral concentration
CCertain concentration
DCritical concentration
Answer & Solution
Correct answer: D. Critical concentration
1. An element is deficient below this level.
2. Above it the plant grows normally.
3. It is the critical concentration.
_Source: NCERT Class 11 Biology, Ch 12 'Mineral Nutrition'_
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