Part A of the labeled diagram of the fungus is the location where this mycelium most actively feeding and growing.
Fungi are members of a group of eukaryotes that include microorganisms such as yeasts and molds, and the more familiar fungi. Hyphae are tubular extensions of multicellular fungi that form filamentous networks (mycelium). Fungal hyphae release digestive enzymes to absorb nutrients from food sources.
Mycelium is a network of fungal filaments or hyphae. Mycelium often grows underground, but may thrive elsewhere, such as in rotting tree trunks. A single spore may grow into a mycelium. From the mycelium, mushroom-like fruiting bodies can sprout.
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