BOTANY

Detailed explanation-1: -Lichens are made up of an alga or cyanobacterium partner (called the photobiont), and a fungus partner (called the mycobiont). The mycobiont provides the lichen with minerals (structure), water, and shelter, while the photobiont provides the lichen with nutrients through photosynthesis.

Detailed explanation-2: -The majority of the lichen thallus is comprised of fungal filaments called the medulla. It is made of fungal cells that are loosely packed in the middle of the lichen thallus, have thin cell walls, and are threadlike. The result is a cotton-like substance underneath the outer cortex.

Detailed explanation-3: -Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga.

Detailed explanation-4: -Lichens are complex organisms consisting of an alga and a fungus. These two components are in a symbiotic or mutualistic relationship with each other. Symbiotic association is the relationship between individuals where both the species benefits or harm or have no effect on each other.