passwella.
Menu

JAMB Biology 1988 Question 49

Question 49

Soil

Most commercial fertilizers are rich in salts of

  1. A.sodium, iron and calcium
  2. B.nitrogen, phosphorus and potassium
  3. C.iron, copper and nitrogen
  4. D.calcium, sodium and phosphorus
Show the answer and explanation

Answer: B (nitrogen, phosphorus and potassium)

Explanation

Common fertilizers are NPK fertilizers, supplying nitrogen, phosphorus and potassium.