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Chapter 26

QuestionAnswer
A method in which an organism feeds by filtering small particles of food from water that passes by or through some part of the organism. Filter Feeding
An animal that can produce both eggs and sperm. Hermaphrodite
Fertilization that occurs outside the animal's body. External Fertilization
Eggs inside the animal's body are fertilized by sperm carried into the sponge with water. Internal Fertilization
A group of invertebrates made uop of more than 9000 species of jellyfishes, corals, sea anemones, and hydras. Cnidarians
A sessile form of a Cnidarian. It's mouth is surrounded by tentacles. Polyp
A capsule that contains a coiled, threadlike tube. Nematocyst
In Cnidarians, a cell surrounded cavity where food is digested. Gastrovascular Cavity
A part of the Cnidarian's nervous system that conducts impulses to and from all parts of the body. Nerve Net
A microscopic, photosynthetic protists that survives in a symbiotic relationship with coral. Zooxanthellae
The phylum that contains the least complex worms. Platyhelminthes
The replacement or regrowth of missing body parts. Regeneration
A tube-like, muscular organ that the planarian extends out of its mouth. Enzymes are released by this organ to begin digesting food outside the animal's body. Pharynx
The knob-shaped head of a tapeworm. Scolex
A section of the tapeworm that contains muscles, nerves, flame cells, and male and female reproductive organs. Proglottid.
This worm causes the most common of roundworm infections in humans. Ascaris
A disease caused by Trichinella which is ingested in raw or undercooked pork, pork products, or wild game. Trichinosis
Created by: cwear
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