Sad Mushroom

The fungi form the third major kingdom of eukaryotic organisms along with the animals (Animalia) and the plants (Plantae). Like plants, to which they have long been classified, they are sedentary, but they cannot photosynthesize. Therefore, like animals, they must feed by ingesting organic substances (heterotrophy), but they absorb them in dissolved form from the environment. According to current knowledge, fungi are more closely related to animals than to plants. They include mainly multicellular organisms such as the stander fungi, but also unicellular organisms such as baker's yeast, as well as coenocytic forms with many cell nuclei but without cellular subdivision. The science that deals with fungi is called mycology.