Word Count : 269

---

Lichens are symbiotic associations between a mycobiont (fungus) and a photobiont (alga or cyanobacterium). Crustose and foliose lichens represent two common morphological types, differing in their thallus structure and attachment to substrates. Crustose lichens have a thin, crust-like thallus that is tightly adhered to the substrate, such as rocks, bark, or soil. They lack a lower cortex, and their upper surface is often flat and smooth or __________ _________ _____ ______ _______ ________ _______ ________.
___ ___ _______ __________ _____ ___ _________ ________ ___.
_____ _____ ___ __________ __________ _________ _______ _______ __________ _______.
_______ ______ ______ _______ _____ _____ _______.
_______ ____ ________ _____ _________.
____ __________ ___ _______ ____ ______ ____ _______ _________ ___ __________.
__________ __________ _________ ______ _______.
______ ___ ________ ________ _________.
_______ _________ ____ ______ ___ ____ _________ _____ __________.
__________ ________ ______ ______ _________ ______ ____ ________.
________ ________ ______ ________ _______ __________ __________.
__________ _____ __________ ______ ___ ______ ________.
_______ _______ _____ ________ _________ ___.
_________ __________ ______ ________ _____.
__________ _______ ______ ____ ______ ______ ____ _________.
___ _____ _________ _______ ______ ___ __________ _______ ______.
__________ _____ _____ _____ ________ _____ _________ ______ ________ ______ _____ ______.
_____ ____ __________ _______ ___.
_____ __________ _________ ____ ______ _____ ________ __________ __________ ____ _________ ____.
_________ _________ _______ ______ _____ _____ _______ ___ ____ _____ ____ ____.
_____ ______ __________ ____ ________ ______ _____ _____ ____ _____ ___.
_________ ___ __________ ____ ________ _____ ______ _____ ________ __________.
________ __________ _________ ____ ________.
____ ___ _________ ________ _________ ________ _____ ________ ___ ____ __________ __________.
____ ____ ______ ______.
Get Full Answer on WhatsApp