Question

Match the following invertebrate genera in Group I with their corresponding Class/Phylum in Group II: 
    Group I                                 Group II
P. Mytilus                                1. Brachiopoda 
Q. Planorbis                            2. Cephalopoda 
R. Productus                           3. Gastropoda 
S. Acanthoceras                      4. Pelecypoda 
 

• A. P-4, Q-1, R-2, S-3
• B. P-4, Q-1, R-2, S-3
• C. P-4, Q-3, R-2, S-1
• D. P-3, Q-4, R-2, S-2

Hint:

Gastropoda includes snails, Pelecypoda includes bivalves, Cephalopoda includes squid, and Brachiopoda includes shelled marine animals.

Answer 1

The Correct Option is A

Mytilus (P) is a genus of bivalve mollusks, so it belongs to the class Pelecypoda (also known as Bivalvia). Hence, P corresponds to 4.
Planorbis (Q) is a genus of gastropods, characterized by coiled shells. Therefore, Q corresponds to 3 (Gastropoda).
Productus (R) is a genus of brachiopods, an ancient group of marine organisms that resemble bivalve mollusks but are a distinct phylum. Therefore, R corresponds to 1 (Brachiopoda).
Acanthoceras (S) is a genus of cephalopods, a class of mollusks that includes squids, octopuses, and nautiluses. Therefore, S corresponds to 2 (Cephalopoda).
Thus, the correct matching is (C): P-4, Q-3, R-2, S-1.