What is a group of species that share a common ancestor called?

Define a taxon. What is meant by taxonomic hierarchy? Give a flow diagram from the lowest to highest category for a plant and an animal. What happens to the number of individuals and the number of shared characters as we go up the taxonomic hierarchy?

Which taxonomic category is formed by a group of related families?

What do the taxonomic categories together constitute?

Give a scientific reason: Taxonomy provides vast opportunities for the study of living organisms.

According to binomial nomenclature,which name of an organism is not reused for any other type of organism,and what does it consist of?