Which of the following insect pests causes defoliation in crops? by Sunday | Jun 6 | Agricultural Science WAEC | 0 comments A. mirid B. grasshopper C. weevil D. aphid Correct Answer: Option B B. grasshopper Users Also Read These:Biological control of insect pests of crops can best…Lesson Note On The Description of the Damage Done by…Which of the following is not an effect on man of…Which of the following insect pests of crops is…Piercing and sucking insect pests possess?