Which of the following genes were introduced in cotton to protect it from cotton bollworms?

Give information about $Bt$ cotton.

Bt cotton is not:

$Meloidogyne$ $incognita$,which infects the roots of tobacco plants causing a great reduction in yield,is a:

Select the incorrect statement regarding rice in India.

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: