Question

Locomotory organ of earthworm is _______________.

Answer 1

Tiny claw-like bristles called setae.

Actually, the earthworms use the setae to anchor them, while waves of muscular contractions alternately shorten and lengthen the body. This movement is called peristalsis and helps the earthworms to move.

Answer 2

Locomotory organ of earthworm is Setae.

Explanation:  

• The body of the earthworm is divided into a large number of segment. These segments bear the setae except the first and the last segment has a collection of setae.  

• These segments have around 180-200 setae. Each setae is slightly yellowish in colour and are shaped like 'S'.  

• The contraction and relaxation of the setae helps in the movement of the earthworm.

• Other than these the earthworm has longitudinal and circular group of muscles. They help in the movement of the earthworm.