A culture of Saccharomyces is available for examination. Obtain a drop and examine the plants under high power. Notice on certain unicellular plants a protrusion, or BUD is evident. This occurs through the formation of a protrusion, which increases in size. The nucleus in the parent cell divides mitotically with one nucleus moving into the bud, and the other remaining in the parent cell.
Demonstrations are available on a few important fungi known primarily as imperfect fungi.
Most of these are ascomycetes that either have lost their ability to reproduce sexually, or do so very rarely. Other imperfect fungi have been shown to be basidiomycetes. Included as ascomycetes are the imperfect genera Aspergillus , very important in the manufacture of cheese and saki, and Penicillium , source of the antibiotic penicillin, also important in cheese manufacture. Look at the cultures under the microscope.