Multiple choice

Deficiency of which element causes premature leaf fall in plants?

  1. Potassium

  2. Sodium

  3. Phosphorus

  4. Zinc

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

When phosphorus is deficient, growth is reduced and leaves fall off prematurely. Plants lacking phosphorus produce dull, bluish-green leaves that turn a purplish or bronze colour with brown edges.