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Phylum Pterophyta

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Topic updated on 10/13/2020 09:52am

Phylum Pterophyta

  • Terrestrial Life adaptations are found
  • Vascular tissues are present
  • Sporophytes are dominant
  • Both sporophyte and gametophyte are photosynthetic
  • Homosporous
  • External water is necessary for fertilization
  • Seed less plants
  • Do   not   bear  flowers
  • Known as ferns
  • Some of the species grow in fresh water and shady regions
  • Gametophyte – bisexual, monocious. Heart shaped. Known as prothallus
  • Multi flagellate sperms

 

Nephrolepis

  • Terrestrial plant which is normally grown by human in vases as ornamental plant
  • Stem is underground rhizome
  • Brown coloured patches are found in the tender leaves
  • Leaves are double fronds and tightly curled so that the tendergrowing tip of the frond is protected within a coil
  • Sori found in the bottom edge of the leaves and they are covered by Indusium
  • Sporangium are found into the sori

 

Terrestrial life adaptation of Phylum Pterophyta

  • Highly developed vegetative body
  • Dominant sporophyte
  • Developed vascular tissues
  • Development of tissues which provide mechanical support to the plant
  • Cuticle found
  • Well-developed root system
  • Development of underground stem and rhizome
  • Compound leaves
  • Sexual reproductive structures are surrounded by fragile layer of cells
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Nephrolepis
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