enlist classes of bryophytes
Answers
Explanation:
environment. Bryophytes are classified into three classes namely Hepaticopsida, Antherocerotopsida and Bryopsida.
classification of bryophytes
Classification of Bryophytes
i Hepaticopsida:
Riccia hirta
Common name: liverworts
Gametophytic plant body: may be thallose or foliose. Aseptate rhizoids.
Sex organs: Present on dorsal surface of thallus.
Sporophyte or sporogonium: Differentiated into foot, seta and capsule.
Elaters: Generally present, absent in some like Riccia
Sporogenous tissue: Develops from endothecium
Dehisce of capsule: Irregular
Examples: Riccia, Marchantia, Sphaerocarpus
ii Anthocerotopsida:
Anthoceros formosae
Common name: hornworts
Gametophytic plant body: Thallose. Aseptate rhizoids.
Sex organs: Present on dorsal surface of thallus.
Sporophyte or sporogonium: foot, short meristematic region and capsule.
Elaters: Pseudoelaters are present in the capsule.
Sporogenous tissue: Develops from amphithecium and endothecium form sterile columella.
Dehisce of capsule: Irregular
Examples: Anthoceros, Megaceros, Notothylus
iii Bryopsida:
Funaria hygrometrica
Common name: Mosses
Gametophytic plant body: Thalloid protonema and leafy gametophore.Obliquely septate rhizoids.
Sex organs: Develop from the superficial cells at the apex of leafy gametophore.
Sporophyte or sporogonium:
Foot, seta and capsule.
Elaters: Absent
Sporogenous tissue: Develops from outer layer of endothecium. Inner layer forms sterile columella.
Dehisce of capsule: Regular
Examples: Funaria, Sphagnum, Polytrichum