Units of............ are united or free.

Consider the following four statements $(i), (ii), (iii)$ and $(iv)$ and select the right option for two correct statements.
Statements:
$(i)$ In vexillary aestivation,the large posterior petal is called standard,two lateral ones are wings and two small anterior petals are termed keel.
$(ii)$ The floral formula for Liliaceae is $\oplus \text{ } \text{O}\mkern-11mu{^\nearrow} \text{ } P_{(3+3)} A_{3+3} \underline{G}_{(3)}$.
$(iii)$ In pea flower,the stamens are monadelphous.
$(iv)$ The floral formula for Solanaceae is $\oplus \text{ } \text{O}\mkern-11mu{^\nearrow} \text{ } K_{(5)} C_{(5)} A_{5} \underline{G}_{(2)}$.
The correct statements are:

Which of the following species is used to obtain both edible oil and fibers?

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

Column-$I$	Column-$II$
$(a)$ Inferae	$(i)$ Hibiscus
$(b)$ Heteromerae	$(ii)$ Lemon
$(c)$ Bicarpellatae	$(iii)$ Sunflower
$(d)$ Thalamiflorae	$(iv)$ Madhuca
$(e)$ Calyciflorae	$(v)$ Catharanthus
	$(vi)$ Rose

Which of the following plants has a watery latex?

What is the approximate height reached by Eucalyptus trees?