Question:

Match List-I with List-II
List-I (Glands)
(A). Gland of interdigital pouch
(B). Carpal gland
(C). Circumoral gland
(D). Glands of infraorbital pouch
List-II (Uses/ location in animal)
(I). Rostral to eye in sheep
(II). Territorial marker in pig
(III). Lips of cat
(IV). Trail marker in sheep
Choose the correct answer:

Show Hint

Sheep have three major cutaneous pouches: infraorbital (near eye), inguinal (groin), and interdigital (between toes).
Since the interdigital pouch is on the foot, it naturally functions as a trail marker.
  • (A) - (IV), (B) - (II), (C) - (III), (D) - (I)
  • (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
  • (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
  • (A) - (III), (B) - (IV), (C) - (I), (D) - (II)
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The Correct Option is A

Solution and Explanation

Step 1: Understanding the Concept:
Many domestic and wild animals possess specialized cutaneous glands that secrete pheromones or scented sebaceous/sudoriferous mixtures used for social communication, territorial marking, or trail marking.

Step 2: Detailed Explanation:

Let us analyze each gland and its specific function/location:
- (A) Gland of interdigital pouch: This is a cutaneous pouch located between the digits of sheep. The secretions of this pouch are deposited on the ground as the sheep walks, acting as a trail marker (IV) to help the flock stay together.
- (B) Carpal gland: Located on the mediocaudal aspect of the carpus in pigs. Pigs rub this region against vegetation to deposit secretions that act as a territorial marker (II).
- (C) Circumoral gland: These sebaceous glands are highly developed on the lips and chin of cats. When a cat rubs its mouth against objects or people ("bunting"), it deposits secretions from these glands to mark its environment as familiar. Thus, it is located on the lips of cats (III).
- (D) Gland of infraorbital pouch: This is a cutaneous pouch situated in a depression of the lacrimal bone, rostral to the eye in sheep (I). Its secretion is used for marking objects.
This gives the match: (A)-(IV), (B)-(II), (C)-(III), (D)-(I).

Step 3: Final Answer:

This combination is represented by option (A).
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