write a note on economic importance of algae and gymnosperms
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Answer:
Write a note on economic importance of algae and gymnosperms. 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:
The economic importance of algae:-
(i) Many species of algae are used as food. Chlorella and Spirulina are a rich source of proteins.
(ii) Agar is obtained from Gelidium algae. It is used in jellies, ice-cream preparation, and laboratory culture media.
(iii) Carrageenin is obtained from red algae. It is used in chocolates, paints, and toothpaste manufacturing. It is also used as medicine for treating worm infection.
The economic importance of gymnosperms:-
(i) An anti-cancer drug, taxol is obtained from Taxus.
(ii) Ephedrine is obtained from Ephedra. It is used for treating asthma and bronchitis.
(iii) Many species of gymnosperms are used as food.
(iv) Pine and cedar act as sources of the soft wood that is used for construction and packing.
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