Antifeedant property occurs in

Which of the following pesticides is an acetylcholinesterase inhibitor?

The phenomenon of using a predator for controlling a pest is known as:

Fungal herbicides are produced by which of the following?

Biological control agents are becoming increasingly important in modern agriculture. Which of the following is considered a third-generation pesticide?

Consider the following statements:
$I.$ Ladybirds and dragonflies are used to get rid of aphids and mosquitoes.
$II.$ The bacteria $Bacillus$ $thuringiensis$ $(Bt)$ are used to control butterfly caterpillars.
$III.$ $Trichoderma$ $sp.$,free-living fungi,are present in root ecosystems where they act against several plant pathogens.
$IV.$ $Rhizobium$ is a symbiotic bacterium that lives in the stem of legumes.
Which of the statements given above are correct?