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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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Fungi: Characteristics

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GENERAL CHARACTERISTICS OF FUNGI 1)They are cosmopolitan in distribution and can occur in any habitat where life  is possible. Some fungi occur in fresh or marine water, others are terrestrial  and still others are air borne. Many species are parasitic, infecting plants,  animals and human-beings. 2)The plant body of fungi typically consists of branched and filamentous hyphae,which form a net-like structure, known as mycelium. 3)The hyphae are aseptate and coenocytic (as in Phycomycetes) or septate and uni-. bi-or multinucleate (as in Ascomycetes, Basidiomycetes and  Deuteromycetes). 4) The septa usually have simple pores but in Basidiomycetes septa with dolipore occur. On both the sides of the dolipore, a double membranous structure -septal pore cap or parenthosome occurs. These septal pores form a valve like structure. 5) With the exception of slime molds, the protoplast remains surrounded by a distinct cell well. The main component of the cell wall is the fungal c...
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