The dwarf varieties of wheat brought from Mexico into India were

Which of the following is not a variety of wheat?

Kufri Pukhraj is a hybrid genetic clone of which of the following?

Varieties developed by the pureline method are

Fill in the blanks in the following statements ($A$ to $C$):
$(A)$ The capacity to generate a whole plant from any cell/explant is called ......$(i)$ .......
$(B)$ The transfer of resistance genes occurs through ........$(ii)$........ . Subsequently,........$(iii)$ ....... occurs between the target and the plant source.
$(C)$ The rice variety $IR8$ was developed in the country ........$(iv)$ ........

What does hybrid vigor (heterosis) involve?