Pharmacognosy Flashcards
6 cards from real B.Pharm. Bachelor of Pharmacy practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Pharmacognosy flashcards as text
Opium is obtained from which part of the plant Papaver somniferum?
Answer: Unripe seed capsule latex
Opium is the dried latex obtained by scoring the unripe seed capsules (pods) of Papaver somniferum (opium poppy).
Which plant is the primary source of the antimalarial drug quinine?
Answer: Cinchona species
Quinine is an alkaloid derived from the bark of Cinchona species (especially Cinchona officinalis and C. calisaya), historically used to treat malaria.
Tannins are plant-derived polyphenols primarily known for their:
Answer: Astringent properties
Tannins are astringent polyphenolic compounds that precipitate proteins, giving them antiseptic, hemostatic, and wound-healing properties.
The process of extracting active constituents from crude drugs using solvents is called:
Answer: Extraction (galenical preparation)
Extraction or galenical preparation involves using solvents (water, alcohol, ether) to dissolve and separate active constituents from crude plant or animal drugs.
Senna leaves are commonly used as which type of therapeutic agent?
Answer: Stimulant laxative
Senna (Cassia angustifolia) contains anthraquinone glycosides (sennosides) that stimulate intestinal peristalsis, acting as a stimulant laxative.
Which natural wax is derived from the head cavities of sperm whales and has been used pharmaceutically?
Answer: Spermaceti
Spermaceti is a waxy substance obtained from the sperm whale and was historically used as an emollient base in cold creams and ointments.