The plant body is differentiated into which of the following parts?

Which of the following is not a stem modification?

Which of the following is an adaptation to reduce water loss?

The typical floral formula for the family Gramineae (Poaceae) is:

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

Identify the correct terms for the given analogy-based questions:
$(i)$ Pea : Marginal placentation :: Dianthus : .....
$(ii)$ Solanaceae : Capsule :: Fabaceae : ..........