Question

Find the correct order of the parts of alimentary canal in cockroach:

• A. Mouth – Pharynx – Crop – Gizzard
• B. Mouth – Oesophagus- Pharynx – Gizzard
• C. Pharynx – Gizzard – Crop – Malpighian tubules
• D. Pharynx – Gizzard – Crop – Oesophagus – Malpighian tubules

Answer 1

The correct option is A Mouth – Pharynx – Crop – Gizzard


The alimentary canal of the cockroach is divided into three regions – foregut, midgut, hindgut.

The foregut consists of mouth, pharynx, oesophagus, crop and gizzard. The food enters through the mouth cavity into the tubular pharynx. The pharynx leads to a narrow tube called the oesophagus. The oesophagus opens into a sac like structure called the crop that stores food. The food from the crop enters into the gizzard, where it gets ground.

Malpighian tubules are excretory structures present at the junction of midgut and hindgut in cockroaches.