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Segmented worms

Vocabulary terms for the Lynx Team

QuestionAnswer
regeneration the ability to regrow missing body parts
crop part of the digestive system where food is stored
gizzard part of the digestive system where food is ground up
five number of aortic arch pairs (aka "pairs of hearts") found in an earthworm
parasite an organism that lives in or on another organism, harming it in some way.
host the organism that a parasite lives in or on
intestines the part of the digestive system where nutrients are completely broken down and absorbed
free-living describes an organism that lives on its own
mouth part of the digestive system where food enters
castings scientific name for an earthworm's solid waste
peristalsis rhythmic contractions of the earthworm's digestive system
clitellum the band found near the head of the earthworm. It secretes a foam ring.
cocoon the foam ring that is secreted by the clitellum. Young worms hatch from it.
sexual type of reproduction where two parents are required
bilateral symmetry an organism that can be cut in one way to produce two nearly identical halves
California blackworm example of a free-living worm
leech example of a parasitic worm
asexual type of reproduction in which all the genetic material comes from one parent
skin liquid wastes exit through this tissue
air enters through the earthworm's skin
setae small bristles that help an earthworm move
anus solid waste exits through this opening
two number of parents required for earthworm reproduction
pharynx/esophagus parts of the digestive system that connect the mouth and the crop
anterior in worms, pertaining to the head or forward end of the organism.
posterior in worms, pertaining to the back end of the organism.
fertilization process in which an egg and sperm unite
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