Question: Which hierarchy includes more genera? A class or family?
Solution:
Remember that each level in the Linnean system is contained, within the level above it. For example, a genus contains one or more species; a family contains one or more genera; an order contains one or more families; and so on. The domain is the highest level of organization and is the largest group.
To further explain this, consider the following mathematical relationship:
The subset relation is a relation that holds between sets. When all the elements of a set D belong to a set E, we say that the set D is a subset of E and we write D ⊂ E.
Thus, the order of levels would be as follows:
Genera ⊂ Family⊂ Order ⊂ Class ⊂ Phylum ⊂ Kingdom ⊂ Domain
This relationship can be seen in the following diagram:
According to the above relationship, we can conclude that the correct answer is:
The class contains more genera than Family