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

Colchicine:
$I.$ is obtained from $Colchicum \text{ } autumnale$
$II.$ is a cytokinesis inhibitor
$III.$ induces polyploidy
$IV.$ is obtained from $Fabaceae$ family
$V.$ Floral formula: $\oplus \text{ } \text{O} \text{ } P_{3+3} A_{3+3} G_{(3)}$
Which are the correct statements?

The inflorescence and fruit of sunflower are ......... respectively.

Alpine plants show

Which of the following is a characteristic of monocots?

Match the following columns based on Bentham and Hooker's classification of Polypetalae:

Column-$I$	Column-$II$
$A$. Thalamiflorae	$i$. Gynoecium always bicarpellary
$B$. Calyciflorae	$ii$. Ovary superior
$C$. Bicarpellatae	$iii$. Receptacle cup-shaped
$D$. Inferae	$iv$. Receptacle dome-shaped
$E$. Heteromerae	$v$. Ovary inferior