The below mentioned article provides biology notes on Fern. Adiantum (Maiden Hair Fern) and Dryopteris (Male Shield Fern) are the two common ferns that are found in moist shady places in tropical, subtropical and temperate areas. Adiantum is also observed to occur under bridges, water courses and walls of old well. Plant body is a perennial independently living evergreen sporophyte [...]
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 [...]
Here is a list of twenty-eight Pteridophytes:- 1. Psilotum 2. Lycopodium 3. Selaginella 4. Isoetes 5. Equisetum 6. Ophioglossum 7. Botrychium 8. Lygodium 9. Gleichenia 10. Cyathea 11. Hymenophyllum 12. Asplenium 13. Pleoplatis 14. Blechnum 15. Lindsaea 16. Cheilanthes 17. Pteris 18. Polystichum 19. Oleandra 20. Dryopteris and a few others. 1. Psilotum: Plant Body (Sporophyte): It is dichotomously branched [...]