The larva of $Bombyx$ $mori$ is known as

In an experiment,freshly hatched larvae of an insect (Khapra beetle) were reared on a basal diet (complete diet without cholesterol) with increasing amounts of cholesterol. Results obtained are shown in the given graph.
The graph indicates:

Which crops are affected by diseases caused by nematodes?

What are three options to increase food production? Discuss each, giving the salient features, merits, and demerits.

Which of the following is considered the most primary and essential need among the basic requirements of humans?

The liquid wax is obtained from: