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GCE Agricultural Science 1990 Question 21

Question 21

Crop Diseases

Root knot of tomato is caused by a

  1. A.Fungus
  2. B.bacterium
  3. C.virus
  4. D.Protozoan
  5. E.nematode
Show the answer and explanation

Answer: E (nematode)

Explanation

Root-knot nematodes (Meloidogyne) cause galls (knots) on tomato roots.