Annelida

By: Jessica Livingstone, Mark McPhee, Raouf Fellah, Melissa Merks

IntroductionKingdom AnimaliaSuperphylum LophtrochozoaPhylum Annelida

Introduction How many? About 17 000 types found all over the world What are they? Class Polychaeta (marine worms) Live in tubes or permanent burrows. Active swimmers, crawlers or burrowers. Class Oligochaeta (earthworms) Live underground in moist soil. Aerate and enrich soil. Class Hirundinea (leeches) Live in freshwater. Used medicinally: remove excess blood after surgery, keep blood from clotting.

IntroductionSignificance to ecosystem?

Earthworms expand pharynx to ingest soil.

Soil is then excreted as feces (scientifically known as humus which contains important nutrients).

CharacteristicsCoelom

Characteristics Body Wall

Characteristics Parapodia

Characteristics Nervous System

Characteristics Sense Organ

Characteristics Circulation and respiratory structures

Life Cycle& Reproduction Fertilization

Egg

Cocoon

Hatchling

Adult

EvolutionAncestor: Flat Worm

Polychaetes

Oligochaetes

Sea and Terrestrial Soil

HabitatWide range of physiological tolerances

Soil

Sea/Oceans

Interesting Facts A preserved specimen of Eunice (Eunicidae) at the Museum of

Natural History in Washington D. C. is close to 3 m in length and around 5 cm in diameter in its preserved and contracted condition.

The largest leech in the world, found in South America and reaches more than 40 cm in length.

Sources http://www.britannica.com/EBchecked/topic/26308/annelid/31789/E

volution-and-paleontology

http://quizlet.com/8533854/lecture-18-annelids-and-lophophorates-flash-cards/

http://animaldiversity.ummz.umich.edu/accounts/Annelida/ http://www.teara.govt.nz/en/diagram/15491/earthworm-life-cycle http://annelidsh.blogspot.ca/2007/03/reproduction.html http://www.rugusavay.com/information-on-annelid-anatomy-classific

ation-habitats/

https://education.yahoo.com/reference/encyclopedia/entry/Annelida http://www.thefreedictionary.com/statocyst