What is the number of important gardens recorded in the $IABG$?

$S$ Statement: Insects are caught,killed,and pinned in insect boxes for preservation.
$R$ Reason: Large animals like birds and mammals are usually preserved by stuffing.
$(a)$ Both $S$ and $R$ are true,and $R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ $S$ is false and $R$ is true.

Match Column $X$ with Column $Y$ and select the correct option:

Column $X$	Column $Y$
$(1)$ Fumigation	$(P)$ For rare species of plants and animals
$(2)$ Tissue culture	$(Q)$ To preserve specimens in jars or bottles
$(3)$ Herbarium/Museum	$(R)$ Protection against fungi,insects,and moisture
$(4)$ Gene bank	$(S)$ For the development of new varieties

Statement $X$: Zoological parks are managed by private organizations. Statement $Y$: Zoological parks are managed by government organizations. Which of the following is correct regarding statements $X$ and $Y$?

The keys are based on contrasting characters generally in a pair called

Which of the following contains a skeleton gallery?