• Studying and understanding the relationship between insects and plants. • Studying and understanding the relationship between insects and insects. • Studying the morphological and anatomical structures for sens organ by using scanning and transmission electron microscope. • Effect of Some extract natural product which changes the oviposition and feeding behaviour in insects. • Electrophysiological studies on the detection of the plant compounds by contact chemoreceptors on insect tarsus and antennae. • Central mapping of contact chemoreceptors in the central nervous system. • Effect of DMDS (Dimethyl Disulfide) as Insecticidal Neurotoxicity in the locoust and mice