Which of the following information is recorded on the herbarium sheet label for a specimen?

$S$ Statement: Periodic poisoning is done to protect against fungi,insects,and moisture.
$R$ Reason: To preserve dried plant specimens,they are sprayed with specific chemicals; this process is called poisoning.
$(a)$ 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.

What can be obtained through research on plants in a botanical garden?

How is a key helpful in the identification and classification of an organism?

How are the treatises prepared by $Bentham$ and $Hooker$ useful in the field of botany?

Which of the following is $NOT$ a component of a zoological park?