Question

Typhlosole of Earthworm is a device for

• A. Extra secretion of digestive enzymes
• B. Increasing absorptive area
• C. Slowing down passage of food
• D. Crushing of food

Answer 1

The correct option is B Increasing absorptive area

A pair of short conical intestinal caecae project in the intestine on the 26th segment. The characteristic feature of the intestine after 26th segment except for the last 23rd -25th segments is the presence of an internal median fold of dorsal wall called typhosole. This increases the effective area of absorption in the intestine. The alimentary canal opens to the exterior by a small rounded aperture alimentary canal known as anus.

So the correct answer is 'Increasing absorptive area'.