Learn about the comparison among bryophytes, pteridophytes and gymnosperms. Comparison # Bryophytes: 1. Sporophytic Plant Body: In bryophytes, monosporangiate thalloid or foliose; roots are absent. 2. Vascular System: No Vascular System is present is bryophytes. 3. Leaf: No circinate vernation in young leaf 4. Sporangium: Sporangium is dehiscent in bryophytes. 5. Spore: Homosporous 6. Sex Organs: Antheridium and archegonium 7. [...]
List of four important early vascular plants:- 1. Cooksonia 2. Rhynia 3. Horneophyton 4. Trimerophyton. Early Vascular Plant # 1. Cooksonia: Cooksonia (Fig. 7.5) is the earliest known vascular plant, ranging in age from Middle- Upper Silurian to Lower Devonian. Several species of Cooksonia have been described from various places like Ireland, South Wales, Scotland, Germany, Czechoslovakia, Russia, North Africa [...]
In this article we will discuss about:- 1. Meaning of Pteridophytes 2. Origin of Pteridophytes 3. Adaptive Features 4. Distribution/Habitat 5. Diagnostic Characteristics 6. Reproduction 7. Life Cycle 8. Relationship/Affinities 9. Stelar System 10. Economic Importance. Meaning of Pteridophytes: Pteridophytes (pteron — feather, phyton — plants) are the non-flowering vascular plants. Hence they may be defined as 'vascular cryptogams'. They [...]