Phylum Bryophyta

20.5.1:PHYLUM BRYOPHYTA

                             UNIQUE CHARACTERISTIC

·       Non vascular plant

·       Special sex organ like ANTHERIDIA(male) and ARCHEGONIA(female)

·       They are small terrestrial plants

·       They are not true vascular tissue

·       Sex organ with protective jacket layer

·       Gametophyte are dominant and independent

·       Sporophyte are small and parasitic

CLASSIFICATION OF BRYOPHYTA

CLASS MUSCI (MOSSES-POLYTRICHUM)

Ø Typically grow as mat of stem like structure which are gametophyte

Ø Gametophyte is differentiate into stem like and leaf like part showing radical symmetry

Ø Protonema(first stage of gametophyte) are present

CLASS ANTHOCEROTAE(HORNWORTS-ANTHOCEROS)

ü  CLOSELY RELATED TO GREEN ALGAE

ü  SPOROPHYTE DIFFERENTIATE INTO FOOT  A        AND CAPSULE

ü  SPOROPHYTE  ARE HORN SHAPED ELONGATED CAPSULE S THAT GROW FROM THE MAT-LIKE GAMETOPHYTE

CLASS HEPATICAE(LIVERWORTS-MARCHANTIA)

Ø CONSIST OF A PROSTRATE,FLATTENED,BRANCHING KNOWN THALLUS(PLANT BODY)

Ø LACK VASCULAR TISSUE (NO XYLEM AND TISSUE)

Ø LIVERWORTS HAVE A GAMETOPHYTE-PLANT CELL ARE HAPLOID)

Ø SPOROPHYTE –DIPLOID BODY) ARE SHORT LIVED

Ø