In this article we will discuss about:- 1. Occurrence of Polysiphonia 2. Cell Structure of Polysiphonia 3. Growth 4. Life Cycle. Occurrence of Polysiphonia: Polysiphonia is a large genus with about 200 species. The genus is represented in India by about 16 species found is southern and western coasts of India. Some common Indian species are P. ferulacea, P. urceolata [...]
In this article we will discuss about the thallus structure of polysiphonia with the help of suitable diagrams. The thallus is filamentous, red or purple red in colour. The thallus is multi-axial and all cells are connected by pit connections hence, the name given is Polysiphonia. Due to continuous branching and re-branching the thallus has feathery appearance (Fig. 1A). The [...]
In this article we will discuss about the cryptogams and phanerogams divisions of plant kingdom. I. Cryptogams: Cryptogams never bear flowers and reproduce by some minute bodies called spores, or by simple fission. They are again divided into three groups: (a) Thallophyta: A thallophyte is that plant where the plant body is an undifferentiated mass of cells (thallus), having nothing [...]