Name the genus of baculovirus that acts as a biological control agent in spite of being a pathogen. Justify by giving three reasons that make it an excellent candidate for the job.

                                                   OR

Microorganisms play an important role for the biological treatment of sewage. Justify.

Baculovirus is of genus Nucleopolyhedrovirus. They attack insects and Arthropods. They are not harmful to humans as well as other organisms. They can be used in ecologically sensitives areas. These viruses are excellent candidates for
species-specific, narrow spectrum insecticidal applications.

                                                                          OR

The primary waste products initially are passed through aeration tanks. During sewage treatment, the mesh-like structure formed between essential bacterial and fungal filaments are called flocs. These organisms help in consuming organic matter and helps in reducing Biochemical Oxygen Demand (BOD).