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Abstract

Since historical period the algae are used as food, fodder and fertilizer. The algae are known to contain different bioactive compounds. It is observed that several algae have stimulatory
effects on seed germination and plant growth. The bioactive compounds present in algae have antimicrobial properties. The biochemicals which are present in algae improve seed germination,
seedling development and increases plant tolerance to environmental stresses. Algae are important members of plant world and several of them are significant to man in many ways. They are beneficial in the field of Agriculture, Industry, Medical Science, Space research, Bio-diesel
production and Bioremediation. They gain importance in the modern time not only as an alternative potential source of protein for man but also as the primary source of food for aquatic
animals. Algae are also considered as rich source of fats, vitamins, minerals and antimicrobial compounds. It was also observed that the algae are found to be stimulatory for the seed germination
and plant growth.

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