Explain briefly the economic importance of pterdophytes.

Explanation

Economic importance of pteridophytes area as follows `:`
(i) Some pteridophytes are used as food . Example `:` Sporocarp of Marsilea.
(ii) They are also used as medicines.
(iii) Rhizomes and petioles of Dryopteris have vermifuge properties.
(iv) Adiantum roots can cure throat infection.
(v) Equisetum arvense is diuretic while its ash relieves acidity.
(vi) Equisetum stems have rough surface. They are used in scrubbing and polishing.
(vii) Ferns and club mosses are also used as ornamental plants.