During the period $1960$ to $2000$,wheat production increased from $.....X......$ million tonnes to $.....Y......$ million tonnes.

Consider the following statements:
$I$. Solid stem in wheat exhibits non-preference by stem sawfly.
$II$. In cotton,smooth leaf and absence of nectar repel bollworms.
$III$. In maize,high aspartic acid,low nitrogen and sugar content protect them from stem borers.
Which of the statements given above are correct?

Which of the following statements is false?

Who amongst the following received the Nobel Prize in $1970$ for his outstanding research contribution?

Which is the primary source for food and fodder?

Choose the correct pair.