Minhoca: Minha casa minha vida

Synopsis: earthworms are animals that live in moist soil and belong to the class Oligochaeta. Are animals Phylum Annellida and have some characteristics such as bilateral symmetry, elongated body, and covered by cuticle. The main characteristic of worms is systematic external segmentation of their body with corresponding internal segmentation.
Besides the worm, there are other species of annelids. We can cite small animals - such as the leech, which can measure only a few millimeters in length - and other large - as minhocuçu, which can measure 1 meter in length. Annelids can live in fresh or salt water and also in damp earth. Have complete digestive tract, ie, have the mouth and anus. The circulatory system is closed, that is, where the blood circulates in the vessels. Breathing is skin - through the skin. Most species have male and female gonads, thus being hermaphrodites. However, cross-fertilization is.
Source: UFMG - Pontociência, Janaina Garcia.
URL: http://www.pontociencia.org.br/experimentos-interna.php?experimento=1167&MINHOCA+MINHA+CASA+MINHA+VIDA#top