Match the following columns with reference to cockroach and select the correct option:
| Column-I | Column-II | ||
|---|---|---|---|
| (a) | Grinding of the food particles | (i) | Hepatic caecae |
| (b) | Secrete gastric juice | (ii) | 10th segment |
| (c) | 10 pairs | (iii) | Proventriculus |
| (d) | Anal Cerci | (iv) | Spiracles |
| (v) | Alary muscles | ||
(1) (a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
(2) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
(3) (a)-(iv), (b)-(iii), (c)-(v), (d)-(ii)
(4) (a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
Answer (2) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
Sol. 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, 10th segment bears a pair of jointed filamentous structures called anal cerci.