Economical importance of bryophytes

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ECOLOGICAL IMPORTANCE OF BRYOPHYTES Mosses and Bryophytes are the first organiasms to colonise rocks. They colonise rock by acidic secretion. This acidic secretion is due to the death of mosses. When the rock is decomposed it helps in soil formation. Therefore New soils are formed. The soil act as binders.  It prevent soil erosion. The water retention capacity of the soil is high ie, water holding capacity of the soil is high.  This reduces surface water run-off which prevent soil erosion. Bryophyte helps in the recycling of nutrients. ECONOMICAL IMPORTANCE OF BRYOPHYTES. 1) SPHAGNUM Sphagnum has high absorptive power with antiseptic property. This can be used to replace cotton in bandages. 2) MERCHANTIA   Mercahntia cures pulmonary tuberculosisand affliction (pain) in liver. Antibiotic substances are also extracted from bryophytes. it also acts as antiseptic, and as preservative POLYTRICHUM Polytrichum dissolove stone in kidney and in gall bladder. 3) IN RESEARCH It is u...
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, what is PERENNATION, notes in algae

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- It is the survival from year to year by vegetative means. 


-the aim of this process is to paas through unfavorable period for their vegetative growth.
-During unfavorable circumstances the activities of protoplast is minimum. Its life process cannot run smoothly, so the alga develop sky stages in its life cycle which is protected by a thick resistant wall. 
-most freshwater and sub- aeriel algae are exposed to some extremely cold and hot places. They therefore, develop certain changes in their structures which carry them safe upto next growing season. The changes are the development of protective layers on them. These protective drcices constitute rhe means of Perennation. 
Hypnospore, akinetes, tubers, mucillagenus sheath, zygote, cyst are the parenting structures seen in algae. 






😃😃😃😃.... 

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