Question

Match the geomorphic features in Group I with the related processes in Group II.

Group I		Group II
P	Pedicle Foramen	1	Trilobita
Q	Pallial Sinus	2	Cephalopoda
R	Pygidium	3	Pelecypoda
S	Siphuncle	4	Brachiopoda

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

Answer 1

The Correct Option is A

To solve this matching question, we need to understand the characteristics of the geomorphic features listed in Group I and match them with the correct related processes or features in Group II. Here is a detailed explanation:

1. Pedicle Foramen - Brachiopoda: Pedicle Foramen is an opening found in Brachiopods (Brachiopoda). It is a feature of the shell through which the pedicle, or stalk, protrudes, anchoring the organism to the substrate.
2. Pallial Sinus - Pelecypoda: The Pallial Sinus is a feature found in Pelecypods, such as clams. It is an indentation in the mantle where the siphon retracts, allowing the organism to maintain a connection to the outside environment while buried in sediment.
3. Pygidium - Trilobita: The Pygidium is the posterior section of Trilobites (Trilobita). It is the last segment of their segmented body, commonly encompassing the tail area.
4. Siphuncle - Cephalopoda: In Cephalopods (Cephalopoda), the Siphuncle is a tube that runs through the shell's chambers, allowing for the regulation of buoyancy by managing gas and fluid levels between chambers.

Using this information, we have the correct matches:

• P-4: Pedicle Foramen corresponds with Brachiopoda.
• Q-3: Pallial Sinus matches with Pelecypoda.
• R-1: Pygidium is associated with Trilobita.
• S-2: Siphuncle corresponds with Cephalopoda.

The correct answer is therefore: P-4, Q-3, R-1, S-2.