Part - I Introduction -- Biomaterials and Biopolymers for the Development of Biosensors -- Part - II Development of nanomaterials and biocomposites as sensors -- Nanobiohybrid Materials for Development of Biosensors -- Biosynthesis, Biofunctionalization, and Bioapplications of Manganese Nanomaterials: An Overview -- Transducers in Biosensors -- Self-Assembly and Fabrication of Biomaterials onto Transducers and their Characterization -- Biocatalytic Sensors: Potentials, Maxims and Mechanisms for Optimal Performance -- Part - III Potential role and applications of bio-based sensors -- Polyhydroxyalkanoate-based sensors and their applications -- An Overview of Immunosensors and their Application -- Live Cells as Biosensors -- Part - IV Biomaterials-based sensors for agricultural and biomedical applications -- Magnetic Nanoparticles Based Novel Sensors for select biomedical/ biological science applications -- Electrochemical Biosensors in Agricultural and Veterinary Applications -- The Applications of Biosensors and Biochips for Prognosis and Diagnosis of Diseases.