Medicinal Leaves: Mentha, Thyme, Guava
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Questions and Answers

Which family does Mentha belong to?

  • Fabaceae
  • Labiatae (correct)
  • Asteraceae
  • Rosaceae

What is the active constituent found in Mentha leaves?

  • Menthol and eugenol (correct)
  • Bitter principles and saponins
  • Phenolic acids and rosmarinic acids
  • Thymol and carvacrol

What is the general character of the stem in the Labiatae family?

  • Round with alternate leaves arrangement
  • Hexagonal with spiral leaves arrangement
  • Square with opposite decussate leaves arrangement (correct)
  • Triangle-shaped with whorled leaves arrangement

What is the botanical name for Thyme?

<p>Thymus vulgaris (D)</p> Signup and view all the answers

What are the medicinal uses of Mentha?

<p>Oil vapour used as inhaler for respiratory congestion and treatment of cough &amp; bronchitis (D)</p> Signup and view all the answers

How are volatile oils different from fixed oils?

<p>Volatile oils don't leave stains on filter paper, while fixed oils do. (C)</p> Signup and view all the answers

What is the medicinal use of Mentha?

<p>Treat colic in infants and reduce gases and cramps (B)</p> Signup and view all the answers

Which phytochemical is NOT revealed in the guava leaf analysis?

<p>Steviol glycosides (A)</p> Signup and view all the answers

What are stevia sweeteners made from?

<p>Leaves of the Stevia rebaudiana plant (D)</p> Signup and view all the answers

Where are volatile oils accumulated in the plant?

<p>In oil tubes (D)</p> Signup and view all the answers

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