Structure of mature antheridium: The mature antheridium is club shape structure and consists of a short multicellular and rounded or ovoid antheridium proper. 2) Photosynthetic Zone : consists of regularly arranged air chambers seprated with each other by septa. Internal structure of Thallus . The thallus features tiny cup-like structures called gemma cups, containing gemmae, small packets of tissue that are used for asexual reproduction.The … External Structure of Marchantia: The gametophyte of Marchantia is a dichotomously branched, prostrate, dorsiventral thallus (Fig. INTERNAL STRUCTURE 1) Epidermal region : well marked upper and lower epidermis. It is widely distributed, commonly found in moist and shady places. Plant body of Marchantia is dichotomously branched with a prominent mid rib. The Marchantia shows differentiation into two layers: an upper photosynthetic layer with a well-defined upper epidermis with pores and a lower storage layer. upper epidermis is interrupted by barrel - shaped air pores. After reading this article we will learn about: 1. The cells of the gammae are filled with chloroplast. Lower (Ventral) surfaces Upper (Dorsal) surfaces. 2) Photosynthetic Zone : consists of regularly arranged air chambers seprated with each other by septa. INTERNAL STRUCTURE 1) Epidermal region : well marked upper and lower epidermis. 2.7E). The cross section of the thallus shows simple tissue arrangement. … The Marchantia shows differentiation into two layers: an upper photosynthetic layer with a well-defined upper epidermis with pores and a lower storage layer. It is one of the important species of Liverworts. Thalli also show cup like structure (Gemma Cups) Gemma cup encloses a number of gemmae meantforasexualreproduction. Marchantia is a genus in the family Marchantiaceae of the order Marchantiales, a group of liverworts.. a large number of function of air pores is to facilitate gaseous exchange. function of air pores is to facilitate gaseous exchange. External structure:-The plant body of Marchantia is thallus-like, prostrate, flat, dorsiventrally differentiated and richly dichotomously branched. Each labe of thallus has distinct mid rib and an apical notch, its wargin is weavry. Bifurcation, which is the splitting of the main thallus in two, is another means of asexual reproduction. There are about 65 species of marchantia. 2.6A). The cells possess chloroplasts. Marchantia is a genus in the family Marchantiaceae of the order Marchantiales, a group of liverworts.. This process is followed by the decay of the older posterior regions of the thallus, thus allowing the species to colonize nearby areas rapidly.

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