$A$ system of rotating crops with legume or grass pasture to improve soil structure and fertility is called

Which are greenhouse crops?

Match the organisms in Column $I$ with their economic importance in Column $II$.

Column $I$ (Organism)	Column $II$ (Economic importance)
$i$. $Trachardia$ $lacca$	$a$. Used to produce oils,soaps and isinglass
$ii$. $Bombyx$ $mori$	$b$. Helps in pollination of crops
$iii$. $Cirrhina$ $mrigala$	$c$. Resin-like substance produced by dermal glands
$iv$. $Apis$ $mellifera$	$d$. Best quality of mulberry silk is produced

Consider the following statements:
$I$. Breeding of animals is very important for animal husbandry.
$II$. Both the male and female animals selected for breeding should be of superior quality.
$III$. The word 'husbandry' means the management of domestic affairs.
$IV$. In our country,poultry mainly means chickens,domesticated for eggs.
$V$. Cows and buffaloes generally give more milk than goats and sheep.
$VI$. The yellow colour of buffalo milk is due to carotene.
Which of the statements given above are true and which are false?
$I \; II \; III \; IV \; V \; VI$

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.

Match the following columns correctly:

Column-$I$	Column-$II$
$(A)$ Worker	$(i)$ Only reproductive function
$(B)$ Queen	$(ii)$ Only reproductive female in the colony
$(C)$ Drone	$(iii)$ Sterile female bee
$(D)$ Major Carp	$(iv)$ Mrigal