diverse group of fungi
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Mould (or mold) is a type of fungus. It grows in the form of multicellular filaments called hyphae.[1][2] In contrast, fungi that can adopt a single-celled growth habit are called yeasts.

Mould on nectarines
Mould on the ceiling of a home

Molds are a large group of fungi. The growth of their hyphae results in discoloration and a fuzzy appearance, especially on food.[3] The network of these tubular branching hyphae, called a mycelium, is considered a single organism.

Mould grows from spores, which float around in the air. There are thousands of different kinds. Some molds cause disease or food spoilage. Sometimes people use them to make some kinds of cheese. Many antibiotics are developed from natural anti-bacterial substance made by moulds.

Mold or mould, also sometimes referred to as mildew, is a fungal growth that develops on wet materials. Mold is a natural part of the environment and plays an important part in nature by breaking down dead organic matter such as fallen leaves and dead trees; indoors, mold growth should be avoided and proper inspection should be done for effective mold removal.[4]

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  1. Moore D; Robson GD & Trinci APJ (editors). (2011). 21st century guidebook to fungi (1st ed.). Cambridge University Press. ISBN 978-0521186957.CS1 maint: multiple names: authors list (link)
  2. Madigan M & Martinko J (editors). (2005). Brock biology of microorganisms (11th ed.). Prentice Hall. ISBN 0-13-144329-1. OCLC 57001814.
  3. Morgan, Mike. "Moulds". Microscopy UK. Retrieved 26 June 2012.
  4. "Mold removal". Ultimatemoldcrew CA. Retrieved 12 January 2021.