Question

In cockroaches, digestive juice is secreted by the

• A. gizzard
• B. Malpighian tubules
• C. hepatic caeca
• D. oesophagus.

Answer 1

Answer: (C)

hepatic caeca

A. The gizzard grinds and crushes the food particles into finer ones and again it filters the food with the help of the fine bristles present at its posterior region.

B. Malpighian tubules: It is the excretory organ in cockroach.

C. Hepatic caeca: The glandular cells of the internal lining of the midgut and hepatic caeca produce juice containing digestive enzymes.

D. Oesophagus: They secrete a hormone which increases the pulsatile rate of heart, peristalsis of the hindgut but decreases the peristalsis of the foregut.

So, the correct answer is 'Hepatic caeca'.