Which of the following is a powerful expectorant and antispasmodic?

Select the correct match.
$(a)$ Cinchona officinalis $(i)$ Rhizome
$(b)$ Rauwolfia serpentina $(ii)$ Bark
$(c)$ Curcuma longa $(iii)$ Root

An alkaloid called 'Reserpine' is extracted from:

Which of the following species provides both edible oil and fibers?

The famous cultivated plant which originated in China is

The centre of origin of gram ($Cicer$ $arietinum$) is: