'Many members like morels and truffles are edible and are considered delicacies' . Therefore, the statement claiming they are poisonous is incorrect. The other statements are correct based on the text: Penicillium is a multicellular Ascomycete known as a source of antibiotics ; Neurospora is used extensively in biochemical and genetic work ; and Yeast is a unicellular fungus used to make bread and beer (fermentation) .