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Most fungi are multicellular and live on land. They have a special mesh called a mycelium that aids in food absorption (see Figure 9.1). The mycelium grows either on or in the food source. Inside the mycelium are special filaments, called hyphae, which contain nuclei. The walls of the hyphae are made of chitin, a hard, protective polysaccharide. The hyphae are sometimes divided into cells via structures called septa, although pores still allow movement of ribosomes, mitochondria and even nuclei through the hyphae. If no walls separate the hyphae, the organisms is classified as a coenocytic fungi.

Figure 9.1: General Structure of a Fungus


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