Stilt roots are found in

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

Which of the following is a pseudo-cereal crop?

The botanical name of Manila hemp is

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

Cotton fibres are made up of