What do bionematicides control?

Which of the following fungi is found useful in the biological control of plant diseases?

Gambusia is a:

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.

Which was the first inorganic pesticide developed on a commercial scale?

'Sporeine' is a