Who developed the semi-dwarf wheat varieties?

Can gamma rays used for crop improvement programmes prove to be harmful for health? Discuss.

In wheat,solid stems lead to non-preference by

Which selection method is used for vegetative propagation in plants?

Match the columns:

Column-$I$	Column-$II$
$(a)$ Mustard	$(1)$ Pusa Sawani
$(b)$ Flat bean	$(2)$ Pusa Sadabahar
$(c)$ Okra	$(3)$ Pusa Gaurav
	$(4)$ Pusa Sem $2$

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