Organisms capable of using CO₂ as principal carbon source are called:

When yeast cells are O₂ starved, fermentation serves as the source of energy. This results in the production of:

During a laboratory experiment, a student immerses epidermal leaf peel in a hypertonic solution. After some time, the student examined the cells under a microscope and observed that:

Which one of the following is not a characteristic feature of fungi?