Of the following, which is the most specific classification category? a) class b) genus c) order d) phylum

B. Genus

Explanation:

Genus and species are the most specific classification categories as they represent the particular genus and respective species. Other categories such as class, phylum and order give broader classification.

Example: Phylum Anthophyta includes all the vascular plants that bear flower and reproduce by seeds.  

However, genus "mangifera" represents all species of mango only.

B) Genus

The order from the broadest to most specific is

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements