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Classifies organisms
- 1. National Dip. in Teaching
- 3. Classify according to the external features. . Sudarshana Elapatha
- 4. Considered , –Morphological –Physiological –Cytological and –Molecular biological features Sudarshana Elapatha
- 5. Explains the natural relationships among organisms of the same species Sudarshana Elapatha
- 6. Explains the evolutionary relationships among different organisms Sudarshana Elapatha
- 24. .. . Bacteria, single- celled organisms visible only through a microscope. Bacteria live all around us and within us.Sudarshana Elapatha
- 25. 1.Structure • Unicellular & microscopic • The nucleus is not covered with a membrane. ( Prokaryote) have not organized nucleus Sudarshana Elapatha
- 26. 2.SHAPES OF BACTERIA Individual bacteria may be Spiral Spirillum Coma shaped Vibrio spherical, Coccus Rod Bacillus Sudarshana Elapatha
- 27. 3.Nutrition • Mostly heterotrophic. • But Cyanobacteria are autotrophic. Sudarshana Elapatha
- 28. 4.Reproduction • Mostly perform asexual reproduction. –Bacteria •binary fission –Cyanobacteria •fragmentation & budding Sudarshana Elapatha
- 29. 5.Distribution • Distribute Almost everywhere. –In water ,soil ,air –In the body of organisms Sudarshana Elapatha
- 30. 6.Examples • Bacteria • Nitrobactor, Nytrosomonas • Rhizobium • Vibrio cholera • Cyanobacteria • Anabaena • Nostoc Sudarshana Elapatha
- 33. Protista, name for organism, Which cannot be included to plants or animal Sudarshana Elapatha
- 34. 1.Structure • Most are microscopic. • But some possess large bodies. • They are eukaryotes. • Mostly unicellular. Some are multicellular • Multicellular organisms do not show a tissue differentiation. Sudarshana Elapatha
- 35. 2.Shape • Different shapes can be seen •Algae - leaf like •Protozoa- sole of shoe shape Sudarshana Elapatha
- 36. 3.Nutrition • Algae are phototrophic. • Protozoans are heterotrophic. Sudarshana Elapatha
- 37. 4.Reproduction • Mostly perform asexual reproduction. •binary fission •Fragmentation •Spore production Sudarshana Elapatha
- 38. 5.Distribution • In water –Saline water- most algae –Fresh water- green algae & protozoa • damp soil - green algae & protozoa • inside the body of organisms - protozoa Sudarshana Elapatha
- 41. Thousands of different types of fungi grow on and absorb food from substances such as soil, wood, decaying organic matter.Sudarshana Elapatha
- 42. 1.Structure • Most of them are microscopic. – But some reproductive structures can be seen with the naked eye. (Mushroom) • They are eukaryotic organisms. • Body is unicellular or multicellular. • Multicellular organisms exist as mycelium. • No tissue differentiation. Sudarshana Elapatha
- 43. 2.Shape •Unicellular fungi has single spherical cells •Multicellular organisms exist as fungi mycelium Sudarshana Elapatha
- 44. 3.Nutrition • All are heterotrophic. • Most of them obtain nutrition as saprophytic organisms. Sudarshana Elapatha
- 45. 4.Reproduction • Reproduce by asexual spores Sudarshana Elapatha
- 46. 5.Distribution •Live on –organic matters –Living bodies Sudarshana Elapatha
- 47. 6.Examples • Yeast • Mucor • Penicilium Sudarshana Elapatha