First slide

Cockroach

Question

With regard to digestive system of Periplaneta, mark the correct statement.

Easy

A

Oesophagus leads into crop which helps in the storage of the food.
B

Grinding of the food takes place only by the mouth parts.
C

Hepatic caeca secrete bile which helps in the emulsification of fats.
D

The midgut is broader than the hindgut.

Solution

Oesophagus leads to crop which helps in the storage of the food.
Grinding of the food takes place both in oral cavity (by mandibles) and gizzard.
Hepatic caeca secrete digestive enzymes (not bile).
The hindgut is broader than the midgut.

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