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Economically Useful Plants and Entrepreneurial Botany. — BIO BOTANY STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12BIO BOTANYEconomically Useful Plants and Entrepreneurial Botany.3 Marks
Question
Write a note on Henna.
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Answer

  1. Botanical name: Lawsonia inermis.
  2. Family: Lythraceae.
  3. Origin and Area of cultivation: It is indigenous to North Africa and South-west Asia. It is grown mostly throughout India, especially in Gujarat, Madhya Pradesh, and Rajasthan.
Uses:
  • An orange dye ‘Henna’ is obtained from the leaves and young shoots of Lawsonia inermis.
  • The principal colouring matter of leaves Tacosone” is harmless and causes no irritation to the skin.
  • This dye has long been used to dye skin, hair, and fingernails.
  • It is used for colouring leather, for the tails of horses, and in hair-dyes.

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