$A$ : $RNAi$ takes place in all eukaryotic organisms as a method of cellular defense.

$R $ : Complementary $dsRNA$ molecule binds to specific $mRNA$ and prevents its translation (silencing).

Genetic engineering is the

What is meant by the term bio-pesticide ? Name and explain the mode of action of a popular biopesticide.

Golden rice is a genetically modified crop plant where the incorporated gene is meant for biosynthesis of

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?