Heterosis is . . . . . . .

The reason for the difference in genetic makeup in each species of animal is ...

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

The Green Revolution succeeded in increasing the yield of crops mainly due to the use of:
$I.$ Improved varieties of crops
$II.$ Agro-chemicals (fertilizers and pesticides)
$III.$ Better management practices
Choose the correct option.

Where is the Central Rice Research Institute $(CRRI)$ located?

Assertion $A$: The use of honey as a medicine is well-known.
Reason $R$: The use of honey as a cosmetic is well-known.
Which option is correct for Assertion $A$ and Reason $R$?