Read this article in Hindi to learn about the structure of spirogyra, explained with the help of a suitable diagram. पहचान एवं वर्गीकरण: यह अलवणीय जल के जलाशयों में पाया जाने वाला तन्तुरूपी हरा शैवाल है । इसकी आयताकार कोशिका में कुंडलित रिबन जैसा क्लोरोप्लॉस्ट इसकी खास पहचान है । वर्गीकरण में इसका स्थान निम्नानुसार है: जगत् - पादप-जगत् (यूकैरियोटिक [...]
A famous botanist F.E. Fritsch (1935) classified algae into following 11 classes, based on pigmentation, reserve food material, flagellation and reproduction. Class 1. Chlorophyceae (= Isokontae): Generally algae are fresh water and chlorophyllous thallophytes. Chlorophyll b and carotenoides are present in chloroplasts. The cell wall is made up of cellulose and food is synthesized in the form of starch. Motile [...]
The following points highlight the economic importance of algae. They are:- 1. Algae Constitute the Link of Food Chain 2. Algae Useful in Fish Culture 3. Recreational Purposes 4. Sewage Treatment Plants 5. Water Supplies 6. Origin of Petroleum and Gas 7. Limestone Formation 8. Space Research and Other Fundamental Studies 9. Food 10. Fodder 11. Fertilizers 12. Medicine 13. [...]