Multiple choice

Any mineral ion concentration in tissues that reduces the dry weight of tissues by about .......% is considered Toxic

  1. 100

  2. 20

  3. 10

  4. 5

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mineral toxicity is defined as any concentration of a mineral ion in tissues that reduces the dry weight of tissues by about 10 percent. This threshold is used to identify when an element becomes toxic to the plant.