Question

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 concentration

Answer 1

Answer:

B. toxic concentration

• 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.