Roots of which of the following species contain valuable alkaloids that are useful in medicine?

Answer: [A] Rauwolfia serpentina

Rauwolfia serpentina is Serpgandha in Hindi. Reserpine is an alkaloid first isolated from R. serpentina and was widely used as an antihypertensive drug. Asparagus officinalis is Shatavari or a vegetable. Emblica officinalis is Indian Gooseberry or Amla in Hindi; Helianthus annuus is Sunflower.

This question is a part of GKToday's Integrated IAS General Studies Module