Funaria life cycle Class 11 Biology. Back to categories. Occurrence l The genus Funaria comprises species. In India, it is represented by 15 species. The following diagram gives one example of a bryophyte life cycle, that of the moss Funaria hygrometrica. click to enlarge · Print this diagram as. Funaria hygrometrica – life cycle. Gametophyte. Spores. Protonema. Sporophytes . See. SEP. A recently germinated spore with a rudimentary protonema. spore.
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The amphithecium divides by periclinal division to form two concentric layers. The fertile region in capsule comprises archesporium lined by outer and inner spore sac. It is cm in height and branched. Answer Now and help others. Root like structures called rhizoids are present. It forms two different types of branches. Its internal structure is more or less similar to axis. The outermost layer is thick walled and called epidermis. Here’s how it works: Share buttons are a little bit lower. The most important adaptation to land life which mosses have in common with other land plants is the presence of a thin cuticula that protects them against loss of water.
It is similar to primary protonema and develops into lite gametophore.
The terminal cell of the filament divides by two vertical intersecting walls, thus an apical cell with two cutting faces is differentiated Fig. It differentiates an apical cell with two cutting faces in the epibasal cell Fig. Within the capsule, spore-producing cells undergo cycls to form haploid spores.
The primary venter cell divides by transverse division to form the venter canal cell and egg cell Fig.
The thin walled cells of the annulus break away, the operculum is thrown off and the peristome teeth are exposed. Each lateral segment divides by a vertical wall so that the six rows of cells form the neck of the archegonium Fig. Magill Funaria usambarica Broth. They show alternation of generation i.
These cells are capable to manufacture their own food but dependent on gametophyte for water and mineral nutrients. At maturity lice distal end of the antheridium funarla one or two thick walled, colourless cells called operculum.
Many mosses can follow asexual propagation through fragmentation of the thallus and formation of specific, multicellular bodies, called gemmae. Magill Funaria clavellata Mitt.
The four cells of the endothecium also divides similarly to amphithecium.
The sporophyte is thus the only diploid phase of the entire life cycle in mosses. Runaria remain small in size, hardly ever exceeding 15 cm.
The female branch arises from the base of the male branch. Calyptrais haploid because it develop from venter wall.
These are devoid of chloroplasts but capable of developing into leafy individuals under favourable conditions. History and Features of Viruses.
Life Cycle of Funaria (With Diagram) | Bryopsida
Leaves are sessile, ovate and green. The uptake of water and nutrients can occur over the entire thallus. Sphagnum, Polytrichum, Funaria The true mosses cyclr an architecture with a distinct stem-like and fuunaria appearance although they do not have true stems, nor leaves, or roots or tissues! The apical cell cuts segments in two rows in regular alternate sequence.
The life cycle of Funaria is haplo-diplontic type. Explain the causes and symptoms of kidney stone. Funaria altissima Dixon Funaria americana Lindb. Published by siddharth verma Modified about 1 year ago.
This is followed by the periclinal division in this layer. Sexual reproduction is oogamous. The peripheral cells divide anticlinally to form a single layered wall of venter which later becomes two layered.
Sexual reproduction in such gametophores results in the formation of tetraploid 4n zygote.