The following points highlight the three modes of reproduction in algae. The modes are: 1. Vegetative 2. Asexual 3. Sexual. Mode # 1. Vegetative Reproduction: In this type, any vegetative part of the thallus develops into new individual. It does not involve any spore formation and there is no alternation of generations. It is the most common method of reproduction [...]
In this article we will discuss about:- 1. Introduction to Cyanophyceae 2. Characteristics of Cyanophyceae 3. Occurrence 4. Thallus Organisation 5. Reproduction 6. Origin 7. Affinities 8. Economic Importance. Introduction to Cyanophyceae: It is a primitive group of algae, consists of 150 genera and about 2,500 species. In India, the division is represented by 98 genera and about 833 species. [...]
In this article we will discuss about the cell structure of cyanophyceae with the help of diagrams. The cyanophycean cells are prokaryotic in nature, which rarely exceeds 10p in diameter. Each cell consists of outer covering of cell envelop which surrounds the membrane covered protoplast (Fig. 3.24C). 1. Envelop: It consists of outer mucilaginous sheath and inner cell wall. a. [...]