Q. What is the Biology field that studies the classification of living beings?
The Biology field that studies the classification of living beings is termed as Taxonomy.
Q. Into which categories living beings are classified?
Living beings are classified from the broader to the more particular category into kingdom, phylum, class, order, family, genus and species KPCOFGS can be used as mnemonic. Kingdom is the broadest category and the others in sequence are encompassed by the earlier one.