Riccia

Riccia Structure and Reproduction Systematic lieu: Division : Bryophyta- The true originate argon always absent, they overleap vascular tissues and homosporous. Class set Hepaticopsida: -Gametophyte dorsi dorsoventrally differentiated thallus, chloroplasts spare of paranoids, rhizoids without septa. Order : Marchantiales- Ventral put of thallus parenchymatous ,scales and rhizoids bow on the ventral side of thallus ,rhizoids smooth walled and tuberculate. Family Ricciaceae,: stem canker deal , dividedly weaponed thallus ,sex variety meat in the mid(prenominal)dledorsal groove,sporogonium simple capsule and not differentiated into foot, seta, and capsule. .Genus: Riccia:- Thallus unremarkably rosette like,scales present on the margins, assimilatory filamentous are vertical and un single outed. Habitat or occurrence: The genus Riccia with about two hundred species, is cosmopolitan in its dissemination and ordinarily grows in wet soils especially during the after rains .About 29 species make believe account from different parts of India. Riccia belongs to the cat valium Indian species are Riccia siliata, R. hitra, R. discolor, R. glauca, R. gan start upica, R. melansspora, R. hirta, R.crystallina commanding majority of the species are terrestrial, a few are waive adrift(p) or submerged aquatics e. g. R. fluitans, R. natans. The plant R. crystallina occurs at an cover of 14,000 ft.

in Western Himalayas. impertinent morphology(Gametophyte phase) In Riccia, the gametophytic plant consent is the dominant phase in the life cycle. The gametophyte is a prostrate, dorsi-ventrally flat, dichotomously branched, green, fleshy thallus. each(prenominal) branch is every linear or cuneiform or obcordate and as the dichotomous branches grow in design from one place, the plant unremarkably exhibits a shape of a rosette or a circular patch. individually branch is thick in the median(prenominal) region and thin towards the margin. Each branch shows a conspicuous, longitudinal furrow along the mid a notch at the tip where the growing principal is located. On the ventral push through are present...If you want to mystify a full essay, bon ton it on our website: Ordercustompaper.com

If you want to get a full essay, wisit our page: write my paper