MCQ
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 ($iii$) Proventriculus
($d$) Anal Cerci ($iv$) Spiracles
  ($v$) Alary muscles
  • A
    $( a )-( ii ),( b )-( iii ),( c )-( i ),( d )-( iv )$
  • $( a )-( iii ),( b )-( i ),( c )-( iv ),( d )-( ii )$
  • C
    $( a )-( iv ),( b )-( iii ),( c )-( v ),( d )-( ii )$
  • D
    $( a )-( i ),( b )-( iv ),( c )-( iii ),( d )-( ii )$

Answer

Correct option: B.
$( a )-( iii ),( b )-( i ),( c )-( iv ),( d )-( ii )$
b
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.

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