ASEXUAL REPRODUCTION OF FERNS : ASEXUAL REPRODUCTION OF FERNS Sporangia releaseSpores with theHelp of annulus
GAMETOPHYTES : GAMETOPHYTES Exosporic
Formed from homospores
Grow independently on soil
Have thin thallus capable of making its own food except Psilotum, Ophiglossum and Lycopodium where mycorrhizae help in nutrition
Spore germinate into monoecious gametophytre. Endosporic
Formed from heterospores
These spores are enclosed in sporecase
Depends upon sporecase for food
Spores germinate into dioecious gametophytes.
Slide 3 : Archegonia Antheridia Rhizoids
Classification of PTERIDOPHYTES : Classification of PTERIDOPHYTES Systematically classified by Engler and Prantl who wrote a book
Die Naturalichen Pflanzenfamilien
The divisions are also characterized, in part, by the nature of the sporangia.
Slide 5 : A Whisk Fern
Slide 6 : Psilotum Tmesipteris
Slide 7 : Sanjeevni booti
Selaginella bryopteris
Meryllyn grass…Isoetes : Meryllyn grass…Isoetes
Slide 9 : Club Mosses Lycopodium