Fungi

Fungi are traditionally grouped into the kingdom of plants. Today, they are considered to be more closely related to animals, but they are grouped into a kingdom by themselves. Fungi may consist of single cells (like yeast) or form multicellular tissues (like mushrooms). A distinctive feature is the cell-wall made up of chitin. Many of the over 70,000 fungal species described use living material as a food source and hence become plant pests.

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