Explanation Statement 1 is correct : A fungus' vegetative body can be unicellular or multicellular. Depending on the environment, dimorphic fungi can transition from a unicellular to a multicellular state. Yeasts are the common name for unicellular fungus.
Statement 2 is correct : Some fungi are able to grow on media solely made of water and algae, which makes this medium unsuitable for studies of carbon metabolism. Different solid state fermentations (SSF) have been used for fungal cultivation.
Statement 3 is correct : In general, fungi require oxygen to survive, but they are also able to use fermentation when they lack oxygen. The fungi include species that are obligately aerobic or obligately anaerobic (e.g., rumen fungi).
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