Fungi, including mushrooms and molds, get their nutrition primarily by absorbing nutrients from their surroundings.
Fungi are heterotrophic organisms who cannot make their own food and must obtain it from other sources. Some fungi are saprobes who feed on dead organic matter, such as decaying leaves, wood, and animal carcasses by secreting enzymes that break down complex organic compounds into simpler molecules followed by the absorption by the fungus.
Other fungi form mutualistic relationships with other organisms, such as plants. For example, mycorrhizal fungi form symbiotic associations with the roots of plants, in which the fungus provides nutrients to the plant, such as nitrogen and plant provides carbohydrates to the plant.
Some fungi are parasites that feed on living organisms, such as animals and plants. For example, ringworm feeds on the skin of its host. Therefore, fungi primarily get their nutrition by absorbing nutrients from their surroundings.
Therefore, fungi, such as mushrooms and molds, get their nutrition primarily by absorbing nutrients using a variety of strategies.
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