Multiple choice

Potassium is taken by plants from the soil in the form of:

  1. potassium chlorate

  2. potassium hydroxide

  3. potassium nitrate

  4. can be in any form

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

Plants absorb potassium from soil primarily in the form of potassium ions (K+), commonly found in potassium nitrate (KNO3), potassium phosphate, or other soluble potassium salts. Potassium nitrate is a common fertilizer source. Potassium chlorate is toxic to plants, and potassium hydroxide is too alkaline.