Write a note on economic importance of algae and gymnosperm
Answers
Answer:
Algae have diverse economic uses. They perform half of the total carbon dioxide-fixation on earth by photosynthesis, acting as the primary producers in aquatic habitats.
Answer:
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Economic importance of Algae :
(a) Agar is obtained commercially from Gelidium and Gracilaria which is widely used in the preparation of jellies, puddings, cream etc.
(b) Some brown algae are menace for shipping.
© Some species of Porphyra, Laminaria and Sargassum are used as food.
(d) An antibiotic chlorellin is extracted out from Chlorella.
Economic importance of Gymnosperm:
(a) Conifers provide enomorous amount of soft wood for construction, plywood, paper industry etc.
(b) Seeds of Pinus (Chilgoza) are edible.
© Saw dust of conifers is used in making linoleum and plastics.
(d) Ephedrine drug is obtained from Ephredra used in asthma.