Where is the International Maize and Wheat Improvement Center located?

Crosses between the plants of the same variety are called:

Which characteristics are present in cotton varieties that do not attract bollworms?
$(i)$ Smooth leaves
$(ii)$ Hairy leaves
$(iii)$ Stem thorns
$(iv)$ Nectar-containing
$(v)$ Low aspartic acid
$(vi)$ Nectar-less

Plants having similar genotypes produced by plant breeding are called:

Traditional breeding methods involve the use of ..........

Choose the correct option for disease-resistant plants.