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Brown algae

  1. 1. BROWN ALGAE
  2. 2. CONTENTS  Introduction .  Definition  Shape  Nutrition requirements  Economic importance  Reproduction  Lifecycle stages  Habitat  Dispersal  Impacts and control  Species
  3. 3. INTRODUCTION :  Brown algae include approximately 1500 speices , are the largest and complex of all algae .  Mutlicellular and marine .  Brown or olive colour to accessory pigments in the chloroplast  Range from simple filamentous to kelps.
  4. 4. INTRODUCTION : Rich in terms of biodiversity *Inhabiting great array of habitats *Critical primary producers in pelagic and coastal environments and in both temperate and tropical regions around the world
  5. 5. SHAPE :  Spherical and about 1/25 inch diameter .  Consists of branched upright filaments and hairs arising from abase of procumbent filament .
  6. 6. ECONOMIC IMPORTANCE :  Food, secondary products  Sources of alginates Emulsifiers in everything from paint to ice cream From kelp beds .
  7. 7. NUTRITIONAL REQUIREMENTS :  from photosynthesis  by absorbing dissolved nutrients
  8. 8. REPRODUCTION AND DISPERSAL :  entirely asexually by means of spores deriving from multi-cell sporangia (organ containing or producing spores) with each cell containing a single spore.
  9. 9. LIFECYCLE STAGES :  The lifecycle of brown algae typically involves an "alternation of generations" between diploid and haploid .
  10. 10. LIFE CYCLE :
  11. 11. HABITAT :  temperate coasts and in colder water of the Northern Hemisphere. They inhabit the intertidal and subtidal zones of coastal waters.
  12. 12. IMPACTS AND CONTROL : Algal blooms may cause great invasion of many species that may cause serious problems . By eradiation technique it can be solved in right scientific way .
  13. 13. BIOLOGY :  pigments  Chl a & c & fucoxanthin  Cell wall  Cellulose and mucilage  Plant body e.g., holdfast, stipe and blades  Reproduction/meiosis/life history  Most: sporic (haplodiplontic)  One order: gametic (diplontic)
  14. 14. SPECIES :
  15. 15. FUCUS :
  16. 16. BROWN ALGAE
  17. 17. CONTENTS  Introduction .  Definition  Shape  Nutrition requirements  Economic importance  Reproduction  Lifecycle stages  Habitat  Dispersal  Impacts and control  Species
  18. 18. INTRODUCTION :  Brown algae include approximately 1500 speices , are the largest and complex of all algae .  Mutlicellular and marine .  Brown or olive colour to accessory pigments in the chloroplast  Range from simple filamentous to kelps.
  19. 19. INTRODUCTION : Rich in terms of biodiversity *Inhabiting great array of habitats *Critical primary producers in pelagic and coastal environments and in both temperate and tropical regions around the world
  20. 20. SHAPE :  Spherical and about 1/25 inch diameter .  Consists of branched upright filaments and hairs arising from abase of procumbent filament .
  21. 21. ECONOMIC IMPORTANCE :  Food, secondary products  Sources of alginates Emulsifiers in everything from paint to ice cream From kelp beds .
  22. 22. NUTRITIONAL REQUIREMENTS :  from photosynthesis  by absorbing dissolved nutrients
  23. 23. REPRODUCTION AND DISPERSAL :  entirely asexually by means of spores deriving from multi-cell sporangia (organ containing or producing spores) with each cell containing a single spore.
  24. 24. LIFECYCLE STAGES :  The lifecycle of brown algae typically involves an "alternation of generations" between diploid and haploid .
  25. 25. LIFE CYCLE :
  26. 26. HABITAT :  temperate coasts and in colder water of the Northern Hemisphere. They inhabit the intertidal and subtidal zones of coastal waters.
  27. 27. IMPACTS AND CONTROL : Algal blooms may cause great invasion of many species that may cause serious problems . By eradiation technique it can be solved in right scientific way .
  28. 28. BIOLOGY :  pigments  Chl a & c & fucoxanthin  Cell wall  Cellulose and mucilage  Plant body e.g., holdfast, stipe and blades  Reproduction/meiosis/life history  Most: sporic (haplodiplontic)  One order: gametic (diplontic)
  29. 29. SPECIES :
  30. 30. FUCUS :

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