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

Which of the following can drastically affect the egg and chicken consumption in a country?

What is the correct evolutionary sequence of the progress in the use of plants for food?

Growing crop plants in monoculture results in ........

Read the following statements carefully and select the correct ones:
$(1)$ The wheat variety $Atlas$ $66$ has high protein content.
$(2)$ $SCP$ is an alternative source of protein for human and animal nutrition.
$(3)$ Plants developed through micropropagation are genetically different from the parent plant.
$(4)$ Semi-dwarf rice varieties were derived from $IR-8$ and $Taichung$ $Native-1$.

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

Column $X$	Column $Y$
$(1)$ Worker	$(P)$ Sterile female
$(2)$ Queen	$(Q)$ Fertile female
$(3)$ Drone	$(R)$ Fertile male
$(4)$ Hilsa	$(S)$ Edible marine fish