Reproduction in lichens for +3 zoology students
REPRODUCTION IN LICHENS - Commonly lichens produced by vegetative , asexual and sexual methords of reproduction. A. VEGETATIVE REPRODUCTION a) BY FRAGMENTION - Death and decay of older parts of the thalus produce smaller pieces. - This pieces give rise to new thalus. - In sometime the broken poritin are born in other substrated by wind. - Each flagelats contains algal and fungal or getting a suitable substrated , each portion give rise to a new thallus. b) BY SOREDIA - It is the most common methord of vegetative reproduction. - Soredia are dispersed by wind sometime they form a massive cating on the thallus called as soredia dust. - Each soredium contain fungal hyphae and algal cell , on getting suitable substratun give rise to new lichen thallus. c) BY ISIDIA - Isidia are broken off from the parent thallus and dispresed to other substrate. - Each isidium contain fungal and algal componets, so they get suitable...
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