1. Chapter 19-2: Fungi in Nature
Symbiotic Relationships

2. Lichens:
are symbiotic partnerships between a fungus and a photosynthetic organism
fungus are usually ascomycete, but can be basidiomycete
grow in places where few other organisms survive
ex: dry bare rocks in deserts, and on tops of mountains.
they are able to survive in harsh environments because of the relationship alga carries out photosynthesis providing the fungus with a source of organic nutrients
are often the first organisms to enter a barren environment
they gradually break down the rock in which they grow, eventually forming an environment that is suitable for other organisms to survive

4. Mycorrhizae relationship formed between Fungi and green plants
the tiny hyphae of Fungi aid plants in absorbing water, minerals and nutrients
the plant in turn provide the Fungi with products of photosynthesis
ex: orchids, the seeds of orchids germinate in nature only in the presence of a certain species of Fungi
Fungi may have played a crucial role in the colonization of the land by green plants

6. By: Katie and Sienna!