Question

Match List I with List II related to digestive system of cockroach.

List I		List II
A	The structures used for storing of food.	I	Gizzard
B	Ring of 6-8 blind tubules at junction of foregut and midgut.	II	Gastric Cacca
C	Ring of 100-150 yellow coloured thin filaments at junction of midgut and hindgut.	III	Malpighian tubules
D	The structures used For grinding the food.	IV	Crop

Choose the correct answer from the options given below:

• A. A-IV, B-II, C-III, D-I
• B. A-I, B-II, C-III, D-IV
• C. A-IV, B-III, C-II, D-I
• D. A-III, B-II, C-IV, D-I

Answer 1

The Correct Option is A

The objective is to align structures from List I with their respective functions or characteristics in List II for the cockroach's digestive system. An examination of each item in List I is performed to establish the correct match with List II:

1. List I-A: Food storage structures. This aligns with the "Crop," a sac-like organ for temporary food storage prior to mechanical processing in the gizzard. Therefore, List I-A corresponds to List II-IV.
2. List I-B: Blind tubules (6-8) at the foregut-midgut junction. These are the "Gastric Caeca," which aid in digestion through the secretion of enzymes. Consequently, List I-B aligns with List II-II.
3. List I-C: Yellow, thin filaments (100-150) at the midgut-hindgut junction. This description identifies the "Malpighian tubules," which are crucial for excretion and osmoregulation by removing waste products. Thus, List I-C matches with List II-III.
4. List I-D: Food grinding structures. This function is attributed to the "Gizzard," responsible for the mechanical breakdown of food. Therefore, List I-D corresponds to List II-I.

The definitive pairings are: A-IV, B-II, C-III, D-I.