Question Detail
Question
What do Major phyla in biology typically include?
Correct Answer
Option A is the correct answer.
Detailed Explanation
In biological classification, a phylum is a major taxonomic rank below kingdom and above class. Option A lists examples of bacterial phyla (Proteobacteria and Firmicutes are among the most common bacterial phyla). Options B refers to a viral genus, C describes a viral life cycle, and D lists types of vaccines, none of which represent 'major phyla' in a general taxonomic sense.
Hint
Think about the hierarchical classification system used for organisms.