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The mineral ion concentration at which the dry weight of a tissue is reduced by 10% is called

Option: 1

Optimum concentration


Option: 2

Critical concentration


Option: 3

Toxic concentration


Option: 4

Ion concentration


Answers (1)

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  • The mineral ion concentration at which the dry weight of tissue is reduced by 10% is called its toxic concentration. 
  • Toxic concentration is different for different micronutrients. It varies from plant to plant.
  • Manganese is toxic beyond 600 microgram/gram for soybean but for sunflower, it is toxic beyond 5300 microgram/gram. 

The mineral ion concentration at which the dry weight of tissue is reduced by 10% is called its toxic concentration. Hence, the correct answer is option c.

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