Which of the following is an oilseed crop?

The father of the Green Revolution in India is:

In $MOET$,an animal is mated with an elite bull or artificially inseminated. The fertilized eggs are then recovered and transferred to surrogate mothers. Which of the following statements is correct regarding this process?

Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Palanpur	$(P)$ $IVRI$
$(2)$ Mehsana	$(Q)$ Banas Dairy
$(3)$ Anand	$(R)$ Dudhsagar Dairy
$(4)$ Izatnagar	$(S)$ Amul Dairy

What is the practice of alternating leguminous crops with forage crops to improve soil structure and fertility called?

Which vegetables were absent in India before the arrival of European invaders?