In which step of plant breeding for genetically variable crops is germplasm collection performed?

Which of the following is a characteristic of maize that provides resistance to stem borer insects?

Resistance to ........ in bhindi ($Abelmoschus$ $esculentus$) was transferred from a wild species and resulted in a new variety of $A. esculentus$ called ........

Select the mismatched pair with respect to mutated varieties of crops.

If a breeder wants to introduce a disease-resistant strain,what should be the first step?

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 ........$(iv)$ ........