Golden rice

$I$. It is a transgenic variety of rice

$II$. It contains a goods quality of $\beta$-carotene (provitamin-A)

$III$. $\beta$-carotene is a principal source of vitamin- $A$

$IV$. The grains of the rice are yellow in colour due to $\beta$-carotene. The rice is commonly called golden rice

Which of the statements given above are correct?

Identify the incorrect statement.

$(i)$ Bacillus thuringiensis are available in sachets as dried spores which are mixed with kerosine and sprayed on to vulnerable plants

$(ii)$ B. thuringiensis are used to control butterfly caterpillars, but leave other insects unharmed

$(iii) $ The toxin of B. thuringiensis is released in the blood of larvae and the larvae get killed

$(iv)$ By the development of methods of genetic engineering B. thuringiensis toxin genes have been introduced

Genetic engineering means

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin$-A$ deficiency?

The organism, which is used for gene transfer in higher plants is