First slide

Essential Mineral Nutrients

Question

Consider critical concentration of magnesium in X plants to be 12 mmole/ kg of dry matter. At which of the following concentration of magnesium plant cells start producing deficiency symptoms.

Easy

A

15 mmole/ kg of dry matter
B

6 mmole/ kg of dry matter
C

20 mmole/ kg of dry matter
D

36 mmole/ kg of dry matter

Solution

Whenever the supply of an essential element becomes limited, plant growth is retarded. The concentration of the essential element below which plant growth is retarded is termed as critical concentration. The element is said to be deficient when present below the critical concentration.

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