Examples of annelids are leeches; earthworms. polychaete, echiara and oligochaeta.
Annelids body symmetry is bilateral.
Annelids reproduction is interesting in that it can be sexual or asexual. Asexual can be by the process of budding, fission or fragmentation. Through sexual reproduction there can be two seperate sexes, although hermaphrodites are common in annelidas.
In annelids, the digestive system consists of a mouth, a long unsegmented gut that runs from the mouth to the last part of the digestive system, the anus.
The body plan of a annelida is segmented, with lengthwise and circular muscles. Annelids have a one-way gut, a circulatory system and a nervous system.
The circulatory system is closed, which means blood is contained and pumped through the heart and through the body by use of vessels.
A annelids nervous system comprises of a single or double nerve cord running along the ventral side of the body. The cords run to or through the ganglion, which is an enlarged region, or usually the head.
An interesting fact about earthworms is that they are a sign of healthy soil. Earthworms aerate the soil by digging through it and moving it around.
Annelids body symmetry is bilateral.
Annelids reproduction is interesting in that it can be sexual or asexual. Asexual can be by the process of budding, fission or fragmentation. Through sexual reproduction there can be two seperate sexes, although hermaphrodites are common in annelidas.
In annelids, the digestive system consists of a mouth, a long unsegmented gut that runs from the mouth to the last part of the digestive system, the anus.
The body plan of a annelida is segmented, with lengthwise and circular muscles. Annelids have a one-way gut, a circulatory system and a nervous system.
The circulatory system is closed, which means blood is contained and pumped through the heart and through the body by use of vessels.
A annelids nervous system comprises of a single or double nerve cord running along the ventral side of the body. The cords run to or through the ganglion, which is an enlarged region, or usually the head.
An interesting fact about earthworms is that they are a sign of healthy soil. Earthworms aerate the soil by digging through it and moving it around.