Plant breeding is:

Which of the following statements are correct regarding the methods of breeding for disease resistance?

Which of the following is one of the most important reasons why wild varieties of plants should be preserved?

Select the correct option for $Saccharum$ $barberi$ and $Saccharum$ $officinarum$.
$I -$ Low sugar content
$II -$ High sugar content
$III -$ Low yield
$IV -$ High yield
$V -$ Grown in North India
$VI -$ Grown in South India
$Saccharum$ $barberi$ $\quad$ $Saccharum$ $officinarum$

In $1960$,the wheat production revolution in India was made possible due to which of the following?

The concept of 'centre of origin' was first of all given by: