3
Earthworms do not have legs.
Earthworms have Red blood.
Earthworms have one mouth.
It is called the interventricular septum.
OVER 2,700 KINDS OF EARTHWORMS CAN BE FOUND
the septum divides the teo ventricles of the heart.
septum
The Atrial septum The wall between the two atriums is called the septum. Septum Cardiac Septum Atrial septum, containing the foramen ovale. Actually its called the interatrial septum...
There are many reasons for a hard lump on the septum. It can be cyst, tumor, or other cause. Only a physician can determine the cause.
Interventricular septum
Earthworms are examples of annelid worms (Phylum Annelida), which also contains leeches and many typres of marine worms. Earthworms are from the Class Oligochaeta, which contanins the earthworms, some freshwater worms and leeches.
septum of the heart divides heart into right and left, that portion of the septum between right and left atria is called (interatrial) septum, while the portion of septum between right and left ventricles is called (interventricular) septum.