Question

One special feature in earthworm, , is that

• A. Fertilisation of eggs occurs inside the body.
• B. It has a long dorsal tubular heart.
• C. The typhlosole greatly increases the effective absorption area of the digested food in the intestine.
• D. The S-shaped setae embedded in the integument are the defensive weapons used against the enemies.

Answer 1

The correct option is C

The typhlosole greatly increases the effective absorption area of the digested food in the intestine.

The typhlosole is the median fold of the dorsal wall of the intestine between segments 26 and 35. It increases the area of absorption.