NEET · Biology · STD 11 - 7. Structural organisation in animal

Match the following columns with reference to cockroach and select the correct option:
Column \(I\) Column \(II\)
(a) Grinding of the food particies (i) Hepatic caecae
(b) Secrete gastric juice (ii) \(10^{\text {th }}\) segment
(c) \(10\) pairs (ii) Proventriculus
(d) Anal Cerci (iv) Spiracles
(v) Alary muscles

A \(( a )-( ii ),( b )-( iii ),( c )-( i ),( d )-( iv )\)
B \(( a )-( iii ),( b )-( i ),( c )-( iv ),( d )-( ii )\)
C \(( a )-( iv ),( b )-( iii ),( c )-( v ),( d )-( ii )\)
D \(( a )-( i ),( b )-( iv ),( c )-( iii ),( d )-( ii )\)

Verified Solution

Answer & Solution

Correct Answer

(B) \(( a )-( iii ),( b )-( i ),( c )-( iv ),( d )-( ii )\)

Step-by-step Solution

Detailed explanation

The correct answer is option (2) because proventriculus or gizzard has an outer layer of thick circular muscles and thick inner cuticle forming six highly chitinous plate called teeth which help in grinding of food particles.
Hepatic caecae secrete gastric juice. Spiracles are 10 pairs in number.
In both male and female cockroach, \(10^{\text {th }}\) segment bears a pair of jointed filamentous structures called anal cerci.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Match the following columns and select the correct option

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List I	List II
A. Progestasert	I. Barrier made of rubber used by females
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Column \(I\)	Column \(II\)
(a) Grinding of the food particies	(i) Hepatic caecae
(b) Secrete gastric juice	(ii) \(10^{\text {th }}\) segment
(c) \(10\) pairs	(ii) Proventriculus
(d) Anal Cerci	(iv) Spiracles
	(v) Alary muscles