Alpine plants,which are commonly found at the top of mountains,show:

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

Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Thalamiflorae	$(P)$ Ovary inferior
$(2)$ Inferae	$(Q)$ Always two carpels
$(3)$ Disciflorae	$(R)$ $6$ cohorts and many families
$(4)$ Bicarpellatae	$(S)$ Citrus limon

Placentation in the given figure is found in which plant?

Categorise the following plants into hydrophytes,halophytes,mesophytes,and xerophytes. Give reasons for your answers.
$(a)$ Salvinia $(b)$ Opuntia $(c)$ Rhizophora $(d)$ Mangifera

Match the following:

Fruit Type	Plant Species
$(a)$ Siliqua	$(i)$ Lycopersicum esculentum
$(b)$ Caryopsis	$(ii)$ Triticum aestivum
$(c)$ Berry	$(iii)$ Helianthus annuus
$(d)$ Cypsela	$(iv)$ Brassica campestris