Classification of pteridophytes For a long time the division Pteridophyta included-the ferns, lycopods and horsetails. These ferns, in biological terms, are nothing but the pteridophytes, belonging to the division Pteridophyta of the plant kingdom. Pteridophytes occupy the intermediate position between Bryophytes and Phanerogams (seed plants). Origin of the Gametophyte: The bryophytes are quite soft and delicate and, therefore, they lack fossil records. Both Bryophytes and Pteridophytes are characterised by heteromorphic alternation, of generation. Haeckel (1866) called these groups of plants as “Pteridophytes” because of their pinnate or feather-like fronds (leaves). 1. Fossils of pteridophytes have been obtained from rock strata belonging to Silurian and Devonian periods of the Palaeozoic era. Teach and Learn Botany Through PPTs by Easybiologyclass Pteridophytes constitute the most primitive seedless vascular plants which reproduce by means of spores. Inter-stelar origin of pith:   According to this theory, the innermost (centrally placed) vascular tissue in a protostele changes into parenchymatous cells. Ø   The division Pteridophyta includes primitive living and fossil vascular plants. This theory is the most widely accepted theory of … The Pteridophytes are non-flowering, vascular and spore-bearing plants including ferns and fern-allies. Thus, Pteridophytes are the plants with Feather-like leaves. INTRODUCTION AND DEFINITION • The Pteridophytes (Gk. The Pteridophytes are non-flowering, vascular and spore-bearing plants including ferns and fern-allies. great forests of pteridophytes and gymno- sperms, when as yet no other animals flew in the sky. Classification of pteridophyta 1. Though almost in all cases, when we talk about origin, it goes about the discussion of fossil, bryophytes don’t have any primitive form than what at present-day it is. With the commencement of monsoon about mid June, the ferns and fern-allies start growing vigourously and luxuriantly. This dominance in the landscape These are: (1) Algal hypothesis of the origin of Bryophytes. Ø  They were originated in the Silurian period and flourished in the Devonian period. Horsetails and ferns come under pteridophytes. But trust me the first thing that you notice is the abundant foliage of fern plants. Ferns, horsetails (often treated as ferns), and lycophytes (clubmosses, spikemosses, and quillworts) are all pteridophytes. BASIC TYPES OF STELES• PROTOSTELE – Central Xylem, surrounding Phloem. The important characteristics of Pteridophytes are summarized below: In this lesson, we'll discover the characteristics, classification, and life cycle of the group Pteridophyta, which includes plant species like ferns and horsetails. List of families and genera of Pteridophytes in India . They are known from as far back as 380 million years. Pteridophytes are the first vascular plants to invade land. No Pith. There are no known fossil bryophytes more primitive than the forms of to-day. The defining features of bryophytes are that their life cycle featuring alternating haploid and diploid generations with a dominant, branched gametophyte stage. ECOLOGY OF PTERIDOPHYTES . Occurrence and evolution of Pteridophytes with its origin and economic importance in Pteridophyta is a group of ancient plants.

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