Question

Draw a well-labeled diagram showing the alimentary canal of a cockroach and label any four parts. What is meant by paurometabolous development in cockroaches?

Answer 1

Paurometabolous development in cockroaches:

1. Cockroach development is a paurometabolous type.
2. It means cockroach develops through the nymphal stage.
3. The nymph resembles the adult version in appearance.
4. Before reaching adulthood, the nymph molts roughly 13 times.
5. Wing pads are present in the next to last nymphal stage.
6. Only adult cockroaches have wings.

Alimentary canal of cockroach:

1. An alimentary canal and digestive glands make up the digestive system.
2. The cockroach's alimentary canal has three sections: foregut, midgut, and hindgut.
3. The space between the foregut and the stomach is where undigested food is temporarily kept.
4. The mouth opens into a short tubular pharynx, which leads to the esophagus, a thin tube conduit.
5. The cockroach employs microorganisms in its stomach sacks to digest its meal.