JAMB Biology 1991 Question 36

Question 36

Plant Responses and Hormones

A dwarf plant can be stimulated to grow to normal height by the application of

  1. A.thyroxin
  2. B.gibberellin
  3. C.insulin
  4. D.kinin
Show the answer and explanation

Answer: B (gibberellin)

Explanation

Gibberellins cause stem elongation, so they make dwarf plants grow tall.