Tag: biology

 The alkaloid belladonna is obtained from roots and  is used as a sedative stimulant and antispasmodic.

(b) Atropa belladonna is obtained from root. They contain atropine alkaloid, which is widely used for dilating the pupil of eye during testing It also a analgesic.

 The alkaloid reserpine is used in several patent drugs, as it has a depressant action on central nervous system and produces sedation and fall in blood pressure.

 Stramonium drug is obtained from Datura. The drug stramonium, was known as narcotic as early as 37 A.D. Even today this is one of the favourite sources of "Knockout drops" in the tropical regions.

 Quinine is one of the most important drug. Its used in the treatment of malaria It is also used in the treatment of fever.

Reserpine is an alkaloid obtained from roots of Rauwolfia serpentina, (sarpgandha) family Apocynaceae. Rauwolfia serpentina contains a number of bioactive chemicals, including reserpine, ajmaline, deserpidine, rescinnamine, serpentinine. It was used for millennia to treat insect stings and the bites of venomous reptiles. Reserpine was used as an attempt to treat high blood pressure and mental disorders, including schizophrenia.

Thus, the correct answer is option A.

The stems are the source of drug ephedrine and also contains other alkaloid pseudo -ephedrine.

Aconitum leterophyllum is a medicinal plant The roots of this plant are used as astringent, tonic, diarrhoea, dyspepsia and cough.

The drug commonly known as aconite is obtained from the tuberous roots. It contains the alkaloids, atisine, dihydroatisine, heteratisine and hetisine.

Dalbergia sissoo and D. latifolia are among the most important Indian timber trees.