Lichen | Definition, Symbiotic Relationship, Mutualism, Types,
网页2024年9月24日 · lichen, any of about 15,000 species of plantlike organisms that consist of a symbiotic association of algae (usually green) or cyanobacteria and fungi (mostly ascomycetes and basidiomycetes). Lichens are found worldwide and occur in a variety of environmental conditions.
Lichen - Wikipedia
网页A lichen consists of a simple photosynthesizing organism, usually a green alga or cyanobacterium, surrounded by filaments of a fungus. Generally, most of a lichen's bulk is made of interwoven fungal filaments, [ 40 ] but this is reversed in filamentous and gelatinous lichens. [ 31 ] The fungus is called a mycobiont.
What Is a Lichen? Definition and Facts - Science Notes and Projects
网页2023年2月11日 · A lichen is a symbiotic relationship between a fungus and a photosynthetic partner (algae, cyanobacteria, or both). Lichens grow all over the world and can even survive exposure to space. They take many forms and are classified according to the type of fungi they contain as well as their shape.
Lichens: Characteristics, Types, Structure, Reproduction, Uses
网页2024年7月31日 · Lichens are group of organisms of composite nature, having two dissimilar organisms (algae and fungus) bounded in a symbiotic relationship.
About Lichens - US Forest Service
网页Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies. The alga can be either a green alga or a blue-green alga, otherwise known as cyanobacteria.
Lichens 101: What They Are & Why They Matter - Joyful Microbe
网页2024年5月29日 · Beyond the main fungal partner and single-celled algae, lichens often harbor a diverse community of bacteria, other fungi, and even tiny multicellular animals like tardigrades and nematodes. So, lichens are actually miniature ecosystems teeming with a diverse community of microbes.
What are Lichens? - Types and General Characteristics of Lichens
网页A lichen is not a single organism but a symbiosis among different organisms like fungus and a cyanobacterium or algae. Cyanobacteria are also referred to as blue-green algae despite the fact of being distinct from algae.
3.7: Lichens - Biology LibreTexts
网页Lichens can generally be classified into three general forms: crustose, foliose, and fruticose. However, there are some lichens that don't really fit into these categories as nicely, such as the "dustose" lichens that form powdery crusts.
What is a Lichen? - The British Lichen Society
网页A lichen is not a single organism; it is a stable symbiotic association between a fungus and algae and/or cyanobacteria. Like all fungi, lichen fungi require carbon as a food source; this is provided by their symbiotic algae and/or cyanobacteria, that are photosynthetic.
Lichen Biology - US Forest Service
网页Lichen Biology Structure. Lichens do not have a waxy cuticle like plants have on their leaves, nor do they have vascular tissue such as xylem and phloem to move nutrients and water around their thalli as a plant does. Everything in the lichen’s environment is absorbed into the lichen's structure.