Which is the primary crop of Asia?

Which state is the largest producer of cotton in India?

Which of the following is considered the most primary and essential need among the basic requirements of humans?

Which crops were introduced to India from the New World?

As a result of various plant breeding techniques for the development of high-yielding varieties of wheat and rice in the mid-$1960$s, there was a dramatic increase in food production. This phase is called $Green Revolution$.
$\quad\quad P \quad Q$

When two unrelated individuals or lines are crossed,the performance of $F_1$ hybrid is often superior to both its parents. This phenomenon is called