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Showing posts with the label ECOLOGY

Reproductive Structures of Pteridophyte

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  Reproductive Structures of Pteridophyte The Pteridophyte sporophyte, besides being a prominent component of soil and vegetation, is an important ornamental plant in gardens and lawns. Indoors, its gracefulness and shape fit it ideally as a plant for pot culture in hallways and living rooms, especially during the months of November to March. Transportation of whole plants from one place to another without damage is attempted by packing them in sand, decomposed silt, ashes, or sawdust. Despite their rich horticultural value, many Pteridophytes are vanishing from nature due to indiscriminate destruction of their natural habitats and capturing of species for ornamental purposes. The best means of conservation is an adequate botanical knowledge of these plants, together with their habitats. The approaches of the non-destructive collection of herbarium specimens are now being stressed. The collection is also supplemented with data regarding the locality and habitat, so as to make it de...
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Nitrogen cycle

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                                                                Nitrogen cycle                     Among the bio-geo chemical cycle,Nitrogen cycle is very important. In Earth's atmosphere   about 78% is nitrogen, making it the largest pool of nitrogen. Nitrogen is essential for many biological processes; and is crucial for any life here on Earth. It is in all amino acids, is incorporated into proteins, and is present in the bases that make up nucleic acids, such as DNA and RNA.In plants, much of the nitrogen is used in chlorophyll molecules which are essential for photosynthesis and further growth .Although, most organisms live in a nitrogen rich atmosphere but it can be used by very few organisms. However the requirement of nitr...
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