Table of Contents
Table of Contents
- Earthworm
- Parts of Earthworm’s body
- Segment
- Setae
- Locomotion in Earthworm
- Earthworm: Farmer’s Friend
- Summary
- What’s Next?
In the previous segment, we learned about The types of synovial joints. In this segment, we will learn about The gait of an earthworm.
What is an Earthworm?
The earthworm is an invertebrate organism. It means they do not have any bones in their body. They are usually found in the soil.
Which parts of the earthworm’s body help in locomotion?
Segments and setae are two different parts of an earthworm’s body that help them to move.
What are Segments?
The segments are the Ring-like Structures that cover the entire body of the earthworm.
What are Setae?
On the lower side of earthworm’s body, small Bristles are present. These hair-like projections are called setae.
Their main function is to grip on the surface on which the earthworm moves.
Parts of earthworm’s body
An earthworm has a cylindrical body with a smooth, slimy skin. It has a head with a mouth, and a tail. The body is divided into segments, with each segment having a pair of tiny, fleshy legs. The mouth is equipped with sharp, pointy teeth that help the worm to chew its food. The digestive system starts at the mouth and runs the length of the body. The excretory system is also located in the body, and the worm uses it to get rid of waste. The nervous system is located in the head, and it controls all the activities of the worm. Earthworms have no eyes, but they can sense light and dark, and they can feel vibrations in the soil.
How does an earthworm locomote?
An earthworm locomotes by contracting muscles along its body to push itself forward. It has segmented plates along its body that help it move, and it secretes a lubricant that helps it move through soil.
