What do the parts labeled $P$ and $Q$ represent in the given figure?

Which of the following books was written by Theophrastus?

Based on the levels of biological organization,what does the part labeled "$P$" indicate in the branches of science?

Which of the following statements are correct regarding biological names?
$(A)$ Biological names are generally in Latin and written in italics.
$(B)$ The first word in a biological name represents the genus while the second component denotes the specific epithet.
$(C)$ Both the words in a biological name, when handwritten, are separately underlined.
$(D)$ The first word denoting the genus starts with a capital letter while the specific epithet starts with a small letter.

$Assertion (S)$: Asterales is an order of maize.
$Reason (R)$: The family of maize is Megascolecidae.
$(a)$ Both $S$ and $R$ are true,$R$ 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.
$(e)$ Both $S$ and $R$ are false.

Which of the following pairs is mismatched?