In mung bean, resistance to yellow mosaic virus and powdery mildew were brought about by

The variety 'Parbhani Kranti' of okra (Bhindi) was developed by introducing resistance against which of the following?

Which of the following statements is true regarding the center of origin of plants?

Which method is used to develop all the cultivated varieties of sugarcane?

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?

The entire collection of plants or seeds having all the diverse alleles for all genes in a given crop is called: