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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Papenfuss system of classification of algae

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Papenfuss system of classification


   G .F.Papenfuss (1995) classified algae into i phyla and 12 classes on the basis of phylogeny relationship. 

  Classification of groups  of algae above order level has changed substantially since 1960,due to development of studies with  election microscope. As it is easy to demonstrate the features of algae that important to classify algae. Similarly and dissimilarities among algal, fungal and protozoan groups have led the scientists to proposed Mayo taxonomic changes. 

      Division levels classification as with kingdom level classification, is incomplete for algae. For example, some physiologist place the classes Bacilleiophyceae, phaeolhyceae and Xanthophyceaae in the division Chromophyta. Whereas others place each class in separate division- Bacilleiophyta, Phaemphyta and xanthophyta. Yet, almost all Phycologis  agree on the retention of respective classes-bacillariophyceae, phaeophyceae and Xanthophyceaae. 

       The classes are distinguished on the basis of structures of flaggelate cells (eg.angle of flagellar insertion, microtubular roots) types of nu fusion ( mitosis) , cytoplasmic division and cell covering. 



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Economical importance of bryophytes

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