$A$ transgenic food crop which may help in solving the problem of night blindness in developing countries is

The important objective of biotechnology in the agriculture sector is:

Identify the gene and its protein that controls corn borer from the given options.

In which organism is a specific gene introduced that produces $dsRNA$ and induces $RNA$ interference in nematodes?

Given below are $2$ statements: one is labelled as Assertion $(A)$ and other is labelled as Reason $(R)$.
Assertion $(A) :-$ Toxic insecticidal protein of Bacillus thuringiensis does not kill Bacillus itself.
Reason $(R) :-$ In Bacillus,$Bt$ toxin protein exists as inactive protoxins.
Correct answer from the options given below :

All the following statements are correct for $Bt$ toxin,but one is wrong. Which one is wrong?