In this article we will discuss about the external morphology of vaucheria. 1. Plant body is tubular or cylindrical and irregularly branched (Fig. 30). 2. Terrestrial species are attached to the substratum by rhizoids. 3. Plant body is aseptate and multinucleate (coenocytic). However, some septa formation is observed at the base of reproductive organs. 4. Wall of the filament [...]
In this article we will discuss about the external morphology of volvox. 1. Coenobium (a colony with definite number of cells) is a hollow sphere of mucilage made of many cells. 2. All the cells are arranged in the periphery of mucilaginuous sphere in a single layer (Fig. 15). 3. Number of cells in a colony varies from 500 to [...]
In this article we will discuss about the external morphology of polysiphonia. 1. Plant body is bush like (Figs. 47, 48) and red or dark blue-coloured. 2. It is multiaxial in habit and few centimeters to several inches in length. 3. Prostrate part of the thallus is attached to the substratum with the help of many elongated and aseptate rhizoids. [...]