1 Iritis is uncommon, but can be due to trauma, infections, or autoimmune conditions. Symptoms include pain, red eye, and often, decreased vision.  Optic neuritis. The nerve travelling from the back of the eyeball into the brain can become inflamed.
Oak root fungus, or white rot, is a widespread disease that becomes visible just beneath the bark and on roots. What looks like layers of light brown to tan mushrooms form in clusters at the base of the trees.
Fungal structure. A multicellular fungus showing rounded spore cases and spores and thread-like hyphae. Multicellular fungi, such as Mucor, are organised into a mycelium-which is made from thread-like structures called hyphae. The hyphae contain many nuclei. cell Basic unit of life. 2  Unicellular organisms only have one cell. 3  Multicellular organisms have many cells. 4  chitin Hard and tough natural material made from glucose molecules joined together. 5  Chitin is found in cell walls of fungi and in the exoskeletons of arthropods.