- Exam
- NEET
- Year
- 2020
- Subject
- Zoology
- Chapter
- Structural Organisation in Animals
NEET 2020 · Zoology · Structural Organisation in Animals
Match the following columns with reference to cockroaches and...
Match the following columns with reference to cockroaches and select the correct option:
| Column | Column | ||
| (a) | Grinding of the food particles | (i) | Hepatic caeca |
| (b) | Secrete gastric juice | (ii) | segment |
| (c) | pairs | (iii) | Proventriculus |
| (d) | Anal cerci | (iv) | Spiracles |
| (v) | Alary muscles | ||
Options
- A
- B
- C
- D
Correct answer
A.
Step-by-step solution
Anal cerci: A pair of anal cerci arises from the lateral sides of the segment in both males and females. It has a sensitivity to sound & vibrations.
Gizzard/Proventriculus: It consists of six chitinous teeth and helps in the grinding of food materials. The outer membrane is thick to help in grinding.
At the junction between gizzard and midgut, finger-like tubular structures are present called hepatic caeca. These hepatic caeca help in the secretion of gastric juice and absorption.
Spiracles: The respiratory system in a cockroach opens to the outside by pairs of lateral openings called spiracles. pairs of spiracles occur in the thorax and pairs in the abdomen.