Semi-dwarf wheat was developed by

Explain variants or mutation as a method of disease resistance.

Superiority of hybrid over parents is known as:

Sonalika and Kalyan Sona are varieties of which plant?

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 source plant.
$(C)$ The rice variety $IR8$ was developed in the country ........$(iv)$ .

Which one of the following agents is used to induce mutation in higher plants?