According to the latest estimates,how many documented varieties of basmati rice are grown in India?

The cultivation of $Bt$ cotton is very popular in the news. What does the prefix "$Bt$" stand for?

Golden rice is a transgenic crop of the future with which of the following improved trait?

$Bacillus\, thuringiensis$ $(Bt)$ strains are used to design:

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 :

Choose the correct option regarding the organism that infects the roots of tobacco plants.