BIO NOTES & FACTS

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 ne...

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 p...