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Why does yeast belong to kingdom fungi though it is not multicellular? According to our NCERT book the features of fungi are multicellular eukaryotic organisms possessing cell wall and protista are eukaryotic unicellular organisms. So from these statements, yeast must be placed in kingdom protista since it is unicellular eukaryotic.


Solution

Most fungi explore their surroundings by producing long fine, branching filaments called hyphae, but most yeasts have become more or less unicellular, with rounded cells. This is often an adaptation to living in a liquid medium of high osmotic pressure. This usually means media with a high sugar content, such as is found in the nectaries of flowers or on the surface of fruits, where if they present the least possible surface area (as close to spherical as possible), it makes it easier for them to control the movement of dissolved substances in and out of their cells. 
 

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