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 used in the fie
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General characteristics of algae

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General characteristics

Algae are the important plants as primary producers in an aquatic system. 
- chlorophyll containing, photoautotropic thalloid. 
- mostly aquatic( both fresh and marine) and may have other habitat like moist stones, soils, wood and association with other animals like lichen. 
-range from microscopic single celled to large seaweed. 
-many species as single cell and other as multicellular. 
- may be eukaryote or prokaryote 
- motile or non motile. 
- pigments and inclusion bodies are present. 
-chloroplast may be 1,2 or many per cell of different shape. 
- A descrete nucleus is present. 
- Reproduction may be by sexual, asexual or by Vegetatively. Sex organs are generally one cellad without any jacket. 
- No embryo forms after gamete fusion. 
- Show alternation of generation. 

😄😄😄😄😄😄. .... 



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