Classification - Verbal and Reasoning

Directions to SolveIn each of the following questions, certain pairs of words are given, out of which the words in all pairs except one, bear a certain common relationship. Choose the pair in which the words are differently related.
Q1:

Choose the pair in which the words are differently related from the rest.

A Onomatology : Names

B Nidology : Nests

C Phycology : Algae

D Concology : Shells

ANS:D - Concology : Shells

Explanation: In all other pairs, first is the study of second.