Highlight five areas where biotechnology has influenced our lives.

Tobacco plants resistant to a nematode have been developed by the introduction of $DNA$ that produces (in the host cells):

Given below are two statements:
Statement $I$: $Bt$ toxins are insect group specific and coded by a gene $cry$ $IAc$.
Statement $II$: $Bt$ toxin exists as an inactive protoxin in $B. \text{ thuringiensis}$. However, after ingestion by the insect, the inactive protoxin gets converted into an active form due to the alkaline $pH$ of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:

Select the appropriate option for $RNAi$.

Which of the following is a transgenic plant?

$Bt$ cotton is used to destroy: