Which bacterium is used to control harmful pests in fruit trees?

Which of the following statements regarding baculoviruses as biocontrol agents is/are correct?
$I.$ Baculoviruses are pathogens that attack insects and other arthropods.
$II.$ Most of these biocontrol agents belong to the genus $Nucleopolyhedrovirus$.
$III.$ They do not harm plants,mammals,birds,fish,and other non-target insects.
$IV.$ Baculoviruses are helpful in Integrated Pest Management $(IPM)$ programmes,in which beneficial insects are conserved.
Choose the correct option.

Select the correct option for $Baculoviruses$.

Select the correct group of biocontrol agents $:-$

What is the use of $Trichoderma$ $polysporum$ (source of Cyclosporin $A$) in biological control?

The insecticide obtained from the neem plant is: