Скачать с ютуб Funaria Life Cycle, Gametophyte, Sexual reproduction, Fertilization, в хорошем качестве

Funaria Life Cycle, Gametophyte, Sexual reproduction, Fertilization,

for book and pdf visit our website https://www.biologylectures.com/ Funaria: Development of Antheridia, Archegonia & Sporophyte    • Funaria Development of sporophyte, an...    Funaria includes 117 species which are cosmopolitan in distribution.  It is terrestrial moss, which grows in dense patches of bright green colour.  It usually grows in moist shady banks and prefer alkaline soil.  Funaria hygrometrica, is the best-known species of the genus.  Shows heteromorphic alternation of generations  Funaria main plant body is free living gametophyte. Body consists of leafy axis which is attached to substratum by rhizoids.  The axis is upright, branched and covered by spirally arranged simple sessile and ovate leaves.  Rhizoids are branched, slender and multicellular and characterized by the presence of oblique septa  The sporophyte stage of bryophytes is also called sporogonium.  A mature sporogonium is differentiated into a massive foot, a long seta, and a pear-shaped capsule (Fig9).  The foot is embedded in the apical tissue of female branch. It absorbs water and nutrients from the gametophyte.  The seta is a long stalk. It carries capsule at its apex.  The capsule is pear-shaped highly organized spore-producing structure. The young capsule is green but later it becomes dark. The apical part of the capsule is covered with remains of ruptured calyptra. The capsule has considerable differentiation of tissues