acid
Cortex
They derive their food photosynthetically
Photobiont - A photosynthetic partner of a symbiotic pair. Mycobiont - The fungal component of a lichen
Mycobiont is the fungal component of a lichen which provides shelter and absorbs minerals and water for the algae.
Fungal hyphae is the member of a lichen that provides inorganic food. Lichens are composed of a fungus and either a cyanobacterium gorwin or aga in intimate association.
The photosynthetic symbiont provides organic food to both itself and the fungal symbiont.
Lichen produce acids that can slowly break down rock in the process of chemical weathering. Acids in water and air also produce chemical weathering.
In my opinion, a lichen can be considered a colonial organism. It has many organisms that are specialized to perform specific functions and it is in close association between fungal and algal cells. It meets the requirements for a colonial organism.
Definitionally speaking, if something is a plant, it cannot have a fungal component since fungi are not plants. However, a lichen is often considered by laymen to be a plant (even though it is actually a symbiotic relationship of two or more organisms). A lichen is the most common example of algae and fungi working together.
The reproductive structures of fungi form high above the source of food. Fungi is a group of eukaryotic organisms that includes mushrooms, molds, and yeasts.
Weaving is to produce a cloth by crossing vertical threads (warp) with horizontal threads (weft) on a loom.