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Plant Kingdom — BIO BOTANY STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11BIO BOTANYPlant Kingdom5 Marks
Question
Write a note on economic importance of Pteridophytes.
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Answer

A note on economic importance of Pteridophytes:
Pteridophyte:
  1. Rumohra adiantiformis (leather leaf fem)
  2. Marsilea
  3. Azolla
  4. Dryopteris filix – mas
  5. Pteris vittata
  6. Pteridium sp.
  7. Equisetum sp.
  8. Psilotum, Lycopodium, Selaginella, Angiopteris, Marattia.
Uses:
  1. Cut flower arrangements
  2. Food
  3. Biofertilizer
  4. Treatment for tapeworm
  5. Removal of heavy metals from soils – Bioremediation
  6. Leaves yield green dye
  7. Stems for scouring
  8. Ornamental plants

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