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                     Pteridophytes :-  The pteridophytes include horsetails and ferns.  • The first terrestrial plants to possess vascular tissue – xylem and phloem.  • In bryophytes the dominant phase in the life cycle is the gamethophytic plant body. However. In pteridophytes , the main plant body is a sporophytes.  • in forns.  • Distinct compact structures called strobli or cones (Selaginella, Equisetum).  • Inconspious , small bet multicellular. • Free – living mostly photosynthetic thalloid gametophytes called prothallus.  • Need for water for fertillisation.  • Fussion of male gamete with an egg present in archegonium result in the formation of zygotes.  • Selaginella and Salvinia which produce two kinds of spores, macro (large) and micro (small) spores, are known and Heterospores . The Female gametophytes in these plants are retained on the parents sporophytes for variable periods. The developments of the zygote into young embryo take place within in the female gameto