ANNELIDA

The gut is a straight tube that ends with the anus. Annelids with blood vessels use metanephridia: a type of excretory gland Annelids without blood vessels use protonephridia: bundle of flame cells that remove waste. Both of these are two stage filtration process, fluid and waste are extrated and then filtered again to re-absorb anything that can be reused. || Closed circulatory system, several hearts and vessels. Solid and liquid waste || Earthworms have male and female organs. Polychaetes are asexual, by budding. Few leech species are males as young adults, and become females at maturity || fertilized eggs, then trochophore larvae which live as plankton, then mature into adults. || Worms create burrows in the soil to improve aeration of soil, and water movement Worms help humans catch fish ||
 * =**Phylum**= || Julia Schmitz ||
 * **1 Examples** || Segmented worms, earth worms, leeches, marine worms ||
 * **2 Habitats** || Marine, fresh, moise soil, leaf litter and under rocks and logs ||
 * **3 Mode of feeding, digestive, excretory** || Mouth region vary, some have jaws, some are filter feeders using palps.
 * **4 Internal Transport****(circulation & respiration)** || Gills, skin excgange
 * **5 Symmetry & Support,**===Locomotion, body covering=== || Muscles along body, work together for movement, contract against fluid in coelom. ||
 * **6 Fertilization &Reproduction****(sexual/ asexual)** || Sexual and asexual
 * **7 Body Forms (life stage forms)** || external fertilization
 * **8 Defense / senses/ response to environment** || Worms can withdraw fast from danger by shortening their bodies. ||
 * **9 Nervous system** || Brain, single cell sensors that detect light. ||
 * **10 Importance (how it fits into****the world)** || Earthworms in soil increase crop production
 * **Misc.** || Some leeches can swallow 10x body weight and take 200 days to digest it. ||