Botany - Ecosystem Question with Solution | TestHub

Lichens are pioneer organisms on bare rocks as they corrode the rocks by secreting enzymes and convert it into soil. The crustose lichens are the first lichens to inhabit the rocks and are called as endothilic. It is a complex life form that is a symbiotic partnership of two separate organisms, a fungus, and algae. The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies.