Question

If organisms A, B, and C belong to the same class but to different orders and if organisms C, D, and E belong to the same order but to different families, which of the following pairs of organisms would be expected to show the greatest degree of structural homology?

A) A and D
B) B and D
C) B and C
D) D and E

Answer 1

The right answer is D) D and E

Step-by-step explanation:

All the organisms are classified into seven major groups or there are seven levels of classification in which organisms are divided. These are Kingdom, phylum, class, order, family, genus, and species.

So here kingdom is the highest level of classification and species is the lowest level of classification. So as we move from kingdom towards species the homology increase and if we move from lower to higher level the homology between organism decreases.

So as the order is at the lower level than class therefore organisms in class will show the greatest degree of structural homology therefore D and E would be expected to show higher structural homology.