In this article we will discuss about the thallus structure of lichens with the help of diagrams. In a lichen thallus, the phyco-symbiont and the myco-symbiont are intimately associated, but their identity is maintained. On the basis of gross morphology, lichens are distinguished into three types — crustose, foliose and fruticose. The crustose lichens grow as a crust adhering closely [...]
In this article we will discuss about:- 1. Introduction to Lichens 2. Symbiotic Association of Lichens 3. Reproduction. Introduction to Lichens: Lichens are composite organisms consisting invariably of a fungus and an alga or a cyanobacterium. The two components are permanently associated with each other to form a lichen- body. The relationship is symbiotic. The algal or cyanobacterial component provides [...]
In this article we will discuss about:- 1. Meaning of Lichens 2. Characteristics of Lichens 3. Habit and Habitat 4. Associated Members 5. Nature of Association 6. Classification 7. Structure of Thallus 8. Reproduction 9. Importance. Meaning of Lichens: Lichens are a small group of plants of composite nature, consisting of two dissimilar organisms, an alga-phycobiont (phycos — alga; bios [...]