Golden rice is enriched with which vitamin?

Which organism infects the roots of tobacco plants and causes a significant reduction in yield?

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 inactive protoxin in $B. \text{ thuringiensis}$. However, after ingestion by the insect, the inactive protoxin gets converted into active form due to alkaline $pH$ of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:

$Bt$ cotton is resistant to pests,such as lepidopterans,dipterans,and coleopterans. Is $Bt$ cotton also resistant to other pests as well?

The $Bt$ toxin genes $cryIAc$ and $cryIIAb$ are responsible for controlling which of the following?

The 'Golden Rice' variety is enriched with which of the following?