The earthworm shows the well-developed segmentation that is characteristic of all animals in the phylum Annelida. Although the major nervous, circulatory, and digestive organs are located near the head, more posterior segments contain peripheral structures for all of these systems. These posterior segments are virtually identical to each other. Earthworms are hermaphroditic, possessing both male and female internal reproductive organs.
Hotmail
Messenger
My MSN
MSN Directory
