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Pteridophytes(plant kingdom) - Coggle Diagram
Pteridophytes(plant kingdom)
Sporophytes
G.C.
seedless,spore producing
Habitat
humid tropical
Temperate
Stem: Underground rhizome
Leaves
Fronds
Large macrophylls
Small microphylls
Pinnately compound
Unipinnate
Leaflets are borne directly from rachis
Bipinnate or tripinnate
leaflets are further sub divided once or twice
Young leaves
Circinate ptyxis
they are coiled like a watch spring
rameta
Younger parts or stem or young leaves
rameta
Hair or scales
Protects from mechnical injury and desiccation
most ferns are
Homosporous : Produce one type of spores
Heterosporous : Produce 2 types of spores
Sexual reproduction
The large macrospores
Female gamatophyte
Small microspores
Male gametophyte
Gamatophyte
is a thalloid called
Prothallus
Bears achegonia or artheridia
Free living
Archegonia is partially embedded
Oogamous type of reproduction
Fertilization and development in the young gametophyte
Life cycle
alternation of generation
Sporophyte-dominating
Gametophyte: inconspicious
Classification
Psilopodia
Lycopodia
Sphenopsida
Pteropsida