Disease resistance in crops is obtained by:

Which type of breeding results in offspring that are different from their parents?

Match the following:

Column-$I$	Column-$II$
$(1)$ Wheat	$(p)$ Taichung Native-$1$
$(2)$ Rice	$(q)$ Sonalika and Kalyan Sona
$(3)$ Sugarcane	$(r)$ Hybrid maize,jowar and bajra
$(4)$ Millets	$(s)$ Saccharum officinarum

When two genetically different individuals or lineages are crossed, the $F_1$ generation often displays superior traits compared to both parents. This phenomenon is called .....

Match the following columns:

Column-$I$	Column-$II$
$P$. Semi-dwarf varieties of wheat	$I$. Sonalika
$Q$. Semi-dwarf varieties of rice	$II$. $IR-8$
	$III$. Jaya
	$IV$. Kalyan Sona
	$V$. Taichung Native-$I$
	$VI$. Ratna

Polyploid wheat is developed by ...... .