- 1. Snake root $\rightarrow$ Rauwolfia serpentina, belongs to Apocynaceae family.
$ \Rightarrow $ [R]
- 2. Artemisia $\rightarrow$ Source of drugs like artemisinin, belongs to Compositae (Asteraceae) family.
$ \Rightarrow $ [P]
- 3. Bitter almond $\rightarrow$ From Prunus amygdalus, belongs to Rosaceae family.
$ \Rightarrow $ [Q]
- 4. Myrrh $\rightarrow$ Oleo-gum resin from Commiphora species, belongs to Burseraceae family.
$ \Rightarrow $ [S]