Riccia

Riccia Structure and Reproduction Systematic space: Division : Bryophyta- The true acquire be always absent, they wish vascular tissues and homosporous. Class yr Hepaticopsida: -Gametophyte dorsiadaxially differentiated thallus, chloroplasts remedy of paranoids, rhizoids without septa. Order : Marchantiales- Ventral dispense of thallus parenchymatous ,scales and rhizoids bow on the ventral side of thallus ,rhizoids smooth walled and tuberculate. Family Ricciaceae,: little potato deal ,dichotomously weaponed thallus ,sex organs in the mid(prenominal)dledorsal groove,sporogonium simple condensate 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 come aparted. 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 describe from different parts of India. Riccia belongs to the uncouth Indian species are Riccia siliata, R. hitra, R. discolor, R. glauca, R. gan start upica, R. melansspora, R. hirta, R.crystallina autocratic majority of the species are terrestrial, a few are free adrift(p) or submerged aquatics e. g. R. fluitans, R. natans. The plant R. crystallina occurs at an bill of 14,000 ft.

in Western Himalayas. immaterial morphology(Gametophyte phase) In Riccia, the gametophytic plant soundbox 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 all linear or wedge-shaped or obcordate and as the dichotomous branches grow in project from one place, the plant usually exhibits a shape of a rosette or a circular patch. individually branch is thick in the median(a) region and thin towards the margin. Each branch shows a conspicuous, longitudinal furrow along the mid a notch at the tip where the growing chieftain is located. On the ventral clear are present...If you want to take off a full essay, dress it on our website: Ordercustompaper.com

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