Root-knot disease in tomatoes is caused by? by Sunday | Jul 4 | Agricultural Science WAEC | 0 comments A. virus B. nematode C. bactrium D. fungus Correct Answer: Option B – nematode Users Also Read These:Gummosis disease of citrus is caused by?Which of the following disease is caused by a bacterium?Foot and mouth disease is caused by a?A disease of rabbit caused by a protozoan is?Foot and mouth disease in sheep is caused by a?