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Q: Digitalis leaves are commercially adulterated by________.
  • A. Lavender leaf
  • B. Datura leaf
  • C. Londonpride leaf
  • D. Comfrey leaf
Correct Answer: Option D - Digitalis leaves are commercially adulterated by comfrey leaf. Comfrey is also a medicinal plant used for the treatment of painful muscle and joint complaints. Comfrey (Symphytum officinale) has also been known as boneset, Knitbone, black wort, wall wort and slippery root.
D. Digitalis leaves are commercially adulterated by comfrey leaf. Comfrey is also a medicinal plant used for the treatment of painful muscle and joint complaints. Comfrey (Symphytum officinale) has also been known as boneset, Knitbone, black wort, wall wort and slippery root.

Explanations:

Digitalis leaves are commercially adulterated by comfrey leaf. Comfrey is also a medicinal plant used for the treatment of painful muscle and joint complaints. Comfrey (Symphytum officinale) has also been known as boneset, Knitbone, black wort, wall wort and slippery root.