prostomium उदाहरण वाक्य

उदाहरण वाक्य

1. The first body segment ( segment number 1 ) features both the earthworm's mouth and, overhanging the mouth, a fleshy lobe called the prostomium, which seals the entrance when the worm is at rest, but is also used to feel and chemically sense the worm's surroundings.