The hexaploid wheat species from which modern types of wheat have been developed:

Consider the following four measures $(1-4)$ that could be taken to successfully grow chickpea in an area where bacterial blight disease is common.
$(1)$ Spray with Bordeaux mixture
$(2)$ Control of the insect vector of the disease pathogen
$(3)$ Use of only disease-free seeds
$(4)$ Use of varieties resistant to the disease
Which two of the above measures can control the disease?

Haploid plants are very important in crop improvement programs because .....

What is responsible for insect resistance in host crop plants?

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

Methods of breeding for acquiring disease resistance are:
$I$. Conventional breeding techniques
$II$. Mutation breeding
$III$. Radiation breeding
Choose the correct option.