What do the terms phycobiont and mycobiont signify?

The terms “phycobiont” and “mycobiont” refer to the two different organisms involved in the symbiotic relationship that forms lichens.

– Phycobiont: This is the algal component of the lichen, which is autotrophic and capable of photosynthesis. It provides the food (photosynthates) to both partners.

– Mycobiont: This is the fungal component of the lichen, which is heterotrophic. It provides shelter and absorption of water and minerals for the algae.

Together, they form a mutually beneficial partnership where the phycobiont produces food through photosynthesis, and the mycobiont offers protection and a suitable environment.