What is a taxon?ans.A group of related speciesA type of living organismsA group of related familiesA group of any ranking Previous Marked for Review Next

A taxon (plural: taxa) is a term used in biological classification to refer to a group of one or more populations of organisms that form a unit. The concept can apply at various levels of the biological hierarchy, including species, family, genus, order, class, phylum, and higher ranks. The most basic taxon is a species, which encompasses groups of organisms that can breed and produce fertile offspring.

Given the options provided:

1. A group of related species
2. A type of living organisms
3. A group of related families
4. A group of any ranking

The best answer is "A group of any ranking." This encompasses the full scope of taxa across all levels in the biological classification system. Taxa can be very broad (like a phylum) or very specific (like a species), making this option accurate.