Question

Name a symbiotic life that grows on the bark of a tree as large colour patches.

Answer 1

The symbiotic life type that grows on the bark of a tree as a large colour of patches are known as lichens. Lichens are the symbiotic associations between fungi as well as algae, wherein the algal partner provides organic food to the fungal partner which in turn gives protection along with absorbing nutrients. The color of lichens is due to the pigments of algae.

Complete answer:
Lichens is a composite organism that rises from algae or cyanobacteria living among filaments of multiple fungi species in a mutuality relationship. Lichens have properties varying from those of their component organisms. Lichens come in many varieties of colors, sizes, as well as types and are sometimes plant-like, but lichens are not plants. Lichens may have tiny, leafless branches like fruticose, flat leaf-like structures that are foliose, flakes that lie on the surface like peeling paint that is crustose, a powder-like appearance like leprose, or other growth for types.
A macro lichen is a lichen that is either bush-like or leafy; all other lichens are referred to as micro lichens. Here, "macro" and "micro" are not described to be size, but to the growth type. Common names for lichens may include the word moss such as "reindeer moss" and "Iceland moss”, as well as lichens may superficially look like along with growth with mosses, but lichens are not related to mosses or any plant. Lichens do not have roots that absorb water as well as nutrients as plants do, but like plants, they produce their own nutrition by the process of photosynthesis. When they grow on plants, they do not live as parasites, but instead use the plants as a substrate.

Note: Lichens are also found on sea level to high alpine elevations, in many environmental conditions, as well as can grow on almost any surface. Lichens are abundant growing on bark, leaves, mosses, on other lichens, along with it they can grow hanging from branches "living on thin air" in rain forests as well as in temperate woodland. They can also grow on rock, walls, gravestones, roofs, exposed soil surfaces, as well as in the soil as part of a biological soil crust.