Multiple choice

A horticulturist noticed purple appearance on the stems, petioles and underside of the leaves of a few plants in his garden. Those plants must be deficient in

  1. manganese

  2. boron

  3. iron

  4. potassium

  5. nitrogen

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

Nitrogen deficient plants will also exhibit a purple appearance on the stems, petioles and underside of leaves from an accumulation of anthocyanin pigments.