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Chapter 29 Unit

QuestionAnswer
The body form called a medusa is? Usually found with tentacles pointing downward.
The simplest animal that has a one way digestive system is the? Roundworm.
Collar cells draw water through the sponges mini pores and into the internal cavity of the sponge by beating their? Flagella.
Support for most sponge is provided by a simple skeleton composed of protein fibers called? Spongin.
Sessile animals? Are attached to a fixed surface during their lives.
Hydrous attach themselves to rocks or water plants by means of a sticky sepresion produced by the? Basal disk.
The cnidarians known as jellyfish are members of the class? Scyphozoa.
Which of the following is a characteristic of a round worm ascaris? All of the above.
Tape worms absorb food from the host intestine through their? Skin.
Water leaves the internal cavity of the sponge through the Oscula.
Which of the following statements about tapeworms are false? They belong to the genus schistosoma.
Skeletal support in the sponges may be provided by the? All of the above.
The class of cnidarians that has no medusa stage is? Anthozoa.
Anthozoans include organisms known as? Sea anemones & Corals.
Flatworms have no need for circulatory and respiratory systems because of? There cells are close to the exterior surface.
A type of roundworm that lives a parasitic life is? All of the above.
SPONGES are filter feeders. True.
Some sponges are capable of TOTAL regeneration even from the smallest pieces of their bodies. True.
Plandiarans have a branch digestive tract with ONLY a mouth and NOT a anus. True.
Humans can avoid SCHISTOSOMIASIS by wearing shoes when they walk through fields. True.
Tapeworms absorb food from their HOST INTESTINE directly through their skin. True.
The structure labeled C is? Mouth.
The structure labeled B is? Intestine.
The structure labeled A is? Eyespot.
An amoeba-like cell in a sponge that moves through the body cells supplying nutrients and removing wastes. Amebocyte.
Tough-flexible protein fibers that make up the skeleton of most sponges. Spongin.
Tiny needles of silica or calcium carbonate that make up the skeletons of some sponges. Spicules.
Clusters of amebocytes with protective coats that enables them to survive harsh conditions that may kill the adult sponge; produced by some freshwater sponges. Gemmules.
Class that includes the most primitive cnidarians. Hydrozoa.
Free-swimming cnidarian larvae. Planulae.
Class of cnidarians that includes jellyfish. Scyphozoa.
The largest class of cnidarians which includes anemones and corals. Anthozoa.
Parasitic flatworms of the class trematoda. Flukes.
Parasites that live inside their host. Endoparasites.
Parasites that live on the exterior surface of their host. Ectoparasite.
In flanardians specialized cells with beating tufts of cilia that draw water through pores to the outside of the worm's body. Flame cells.
Thick protective covering of cells that protects endoparasites from being digested by their host. Tegument.
Rectangular body sections of the tapeworm. Proglottids.
Created by: ava-barnhill
 

 



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