www.bbcnoun.com.ng 10/10 _____ pesticides when applied to the animal or plant on which the insects are feeding and once he insects feed on the treated host, they die systemic The body of a typical insect is divided into _____ parts three _____ control method of pest is the oldest control method available biological How many stages of development is common a butterfly? 4 The study of insects is called _____ entomology A box with one piece of glass on top filled with cotton and the insects are mounted on the cotton just under the glass is called Riker mounting Pesticides are classified by the types of pests they are designed to _____ control ____ evaluate insect population and damages, recommend insect management programs, apply insecticides and dispose of chemicals pest controller Gases that kill when they are inhaled or otherwise absorbed by insects are called _____ fumigants Chemosterilants normally induces chromosomal aberrations and abnormalities in subsequent _____ nuclear divisions