a) Solution: Agaricus bisporus, and
Saccharomyces cerevisiae.
∙ Two fungi commonly used as food are mushrooms and yeast.
∙ The scientific name for the common button mushroom is Agaricus bisporus, and yeast is Saccharomyces cerevisiae.
∙ Yeast is commonly used as a leavening agent in bread making, and to ferment grains to produce alcoholic beverages.
∙ Certain mushroom varieties like button mushrooms are often eaten as a vegetable due to their high nutritional value.