Multiple choice

An essential element is the one which

  1. is available in soil

  2. improves plant growth

  3. is indispensable and irreplaceable for growth

  4. is present in plant ash

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

An essential element is defined by Arnon and Stout as one that is required for the plant to complete its life cycle, and its function cannot be replaced by another element.