Morphology and Life Cycle of Nostoc (Reproduction Thallus Structure Akinetes,) bsc 1st year

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Alage are terrestrial or fresh water and almost absent from marine habitats.
 Free-living colonies or attached to rocks or at the bottom of lakes and some present on tree trunks.
 Nostoc forms symbiotic associations (nitrogen fixation) with other plants from different taxonomic groups; Lichens, Bryophytes, Pteridophytes, Gymnosperms and Angiosperms (Gunnera).
 It is also found in paddy fields where it helps in atmospheric nitrogen fixation.
 Nostoc azollae forms symbiotic association with water fern (Azolla).
 Nostoc punctiforme form symbiotic relationship with Anthoceros and Cycas (coralloid root)
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[@sibasankarpadhyy9559]

Sir ye semester 1 zoology generic ( botany) ka hein yaa.... Honours ka hein.. Please reply..sir nostoc ka life cycle nehin hein kya... Please reply me... Because my exam is start....

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