Question

Any mineral ion concentration in tissues that reduces the dry weight of tissues by about 10 percent is considered as

• A. critical concentration
• B. toxic concentration
• C. beneficial concentration
• D. transition concentration

Answer 1

The correct option is B toxic concentration

Micronutrients when present at higher doses becomes toxic in nature. The concentration of mineral ions that reduces the dry weight by 10% of tissues is termed as toxic concentration Critical toxic concentration is different for different micronutrients as well as different plants. Toxic effects may be due to an excess of the micronutrient or its interference in the absorption and functioning of other nutrients.