Most fungi are multicellular. The food-absorbing part of the fungus is a mesh of branching filaments called the mycelium. Each tubular filament is a hypha with chitinous walls. Interconnections and perforations allow cytoplasmic flow necessary for transport to nonabsorptive parts of the body. Reproductive Modes Asexual reproduction is mostly by spores produced in sporangia.
Sexual reproduction proceeds through the formation of gametes in gametangia as well as by spores.
The name is taken from the structure that forms in sexual reproduction. Gametangia form and make haploid nuclei, which later fuse to form a zygote. Each spore germinates to produce a stalked structure that releases spores that will grow into new mycelia. This group includes both single-celled and multicelled forms. Multicelled forms include edible morels and truffles.