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BIO NOTES & FACTS is a platform which provides you various facts about Biology. This site will give you amazing short notes,Which will help Students in various way and thus help them in their studies for better understanding about biology.

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Thallophyta ( plant kingdom ) , plantae: classification

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Thallophyta These are the plants with no body differentiation They do have a specific root, stem, leaves so they do not have specific differentiation   They prefer aquatic habitats examples :-green algae In thallophyta they have a hidden reproductive system -cryptogamae Algae They are autotrophic  Habitat :- Mostly aquatic (freshwater/ marine )  , found in most soil/ wood  Structure :- It can be unicellular,colonial, filamanteous  Examples :-volvox ( colonial ), Chlamydomonas (unicellular ), Ulothrix (filamenteous ), Spirogyra ( filamenteous ), Ulva, Cladophora (branched filaments) it is also known as river weed Algae reproduction  Asexual reproduction :- Fragmentation Parent organism will break into new pieces or multiple pieces on maturity, each of which give rise to a new individual. Example :- spirogyra when it  becomes matures it breaks into new pieces and each of these pieces are able to give rise to a new organism altogether. Fission  
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plant kingdom

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P LA NT  KINGDOM Plantae : characterstics Eukaryotes :-specific membrane bound cell organelle & distinct nucleus  Multicellular :- they are  made up of multiple cells  Autotrophic :- prepare their own food  Immobile  They can be aquatic or land plants  Their cell walls are present Classification system  Artificial Natural Phylogenetic Artificial classification system   External morphological characters  Advantages :-closely related species could be classified  Limitations :- Equal weightage to vegetative and sexual characterstics Natural classification system  External as well as internal characters are the basis of classification Advantages :-overshadows limitations of artificial system                        Establishes relationship between organism  Limitations :-closely related organism can differ in important properties  Phylogenetic classification system  Evolutionary relationships between organisms are the basis of classification
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Biological classification

Biological classification Topics Introduction 2-kingdom classification whittaker 5-kingdom classification kingdom monera  Archaebacteria Eubacteria Mycoplasma kingdom protista chrosophytes Dianoflagellates Euglenoids Slime moulds Protozoans Kingdom fungi Phycomycetes Ascomycetes Basidiomycetes Deuteromycetes Viruses,viroids &lichens Introduction classification of living organism classifying living organism into groups based on their certain  set of characteristics (characteristics is a feature or a quality belonging to a particular  organism) Aristotle's attempt to classify living organism. He classified organisms based on habitats Land (terrestrial) -cat, dogs,human beings water(aquatic )-fish,shark,octopus Air(aerial )-bat,crow etc. He classified plants also; Herbs Shrubs Trees But then this type of classification is not very effective,because it was seen that even though there were several
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