Why are lichens isolated as an independent group of organisms?

Lichens occupy a special place in the system of the organic world. They cannot be attributed to plants, animals or mushrooms.
Lichens are an independent group of complex symbiotic organisms, since their body – thallus, or thallus (from the Greek tallos – shoot) – consists of two organisms – fungus and algae.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.