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:Lesson Note On The Description of the Damage Done by…Pests of crops that feed by piercing and sucking…Which of the following is not an effect on man of…Piercing and sucking insect pests possess?The most important pests of vegetable crops are?