Which of the following is a microbial insecticide?

Which of the following is the ladybird beetle useful for getting rid of?

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?

What is Thuringioside?

Which of the following insects is controlled by the sterile insect technique?

In the confusion technique,pheromone-coated paper strips are thrown over an area in order to: