Root knot disease is caused by___________________?
Correct answer: B. Nematodes
- A. Fungi
- B. Nematodes
- C. Virus
- D. Bacteria
Explanation
Root-knot disease is caused by parasitic Meloidogyne nematodes, which induce characteristic galls on roots. Fungi, bacteria and viruses cause other diseases but do not produce the typical root-knot condition.
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