Flashcards in Abeka Biology Chapter 21 Deck (57):
What is the largest group of water animals on earth?
What hump of a mollusk contains the internal organs?
What skin like organ which covers the visceral hump produces calcium?
What are the most familiar classes of mollusks?
gastropods (univalves), bivalves, and the cephalopods (octopus, squid, cuttlefish, and chambered nautilus.
How many distinct layers make up each shell of a bivalve?
What if formed when sheets of nacre are secreted on a foreign object in a clam?
What muscles hold together the two shells of a bivalves?
What is the opening chamber in which the gills are located?
What siphon takes water into the mantle cavity to the gill, where oxygen and carbon dioxide are exchanged?
Through what siphon does the water pass out of?
What is another name for gastropods?
Univalve (because most of them have a single shell).
What gastropods look like snails with shells?
What sea creatures are known for their brilliant colors and exposed gills?
What rough, file-like organ in the mouth scrapes food and caries it like conveyor belt into the digestive tract?
What is the largest invertebrate?
The giant squid.
What are starfish, sea urchins, sand dollars, sea cucumbers, and brittle stars classified as?
What are the only animals with water-vascular system?
What projections are under each ray of a starfish which are used for holding onto things, for moving, and for opening the shells of clams and oysters?
What microscopic invertebrates found in fresh water lakes and ponds, are perhaps the smallest multicellular animals?
What does it mean when a female's eggs are parthenogenic?
They do not require fertilization.
What is a cylindrical body type which is sessile and has its mouth facing upward?
What is a free-swimming, umbrella-shaped body type which has its mouth facing downward?
What is an opening through which water leaves an organism called?
What tiny spores are located in the sides of the animal, that water enters through?
What cells, which line the body cavity, are named because of their unusual shape?
What special cells situated within the mesoglea are crystalline support structures of the sponge?
What worms include earthworms, se worms, and leeches and belong to phylum annelida?
What are the four extendable and retractable bristles found on an earthworm?
What is the circulatory system made up of in an earthworm?
Red blood, two large blood vessels, two smaller connecting blood vessels in each body segment, and ten "hearts" or aortic arches, arranged in five pairs near the earthworm's head.
What coiled excretory tubes are open at both ends and function like tiny kidneys?
What fleshy lobes are found in each body segment of all sea worms, and assist in movement and in the exchange of oxygen and carbon dioxide?
What coiled excretory types are open at both ends and function like tiny kidneys?
What are wormlike animals with flattened bodies?
What light sensitive spots are responsible for the planarian's nickname, "the cross-eyed worm"?
What is the most familiar fluke?
What is a liver disease prevalent in certain areas of China, Korea, Japan, and other nations of southeast Asia?
What small, knoblike head is equipped with hooks and suckers that permit the tapeworm to attach itself firmly to the wall of the host's intestine?
What serious condition is produced by the filaria worm, which inhabits the vessels of the lymphatic system?
What disease is caused by the trichina worm?
What tiny animal-like creatures are composed of a single cell?
What membrane, which acts as a cell wall, covered a euglena, which resembles both plants and animals?
How is the euglena propelled?
By its flagellum, a whiplike filament which is located on its anterior end.
What is the movement of the euglena called?
How do euglenas reproduce?
by binary fission
What fly transmits the African sleeping sickness?
What cell membrane, which means "false feet" gives the organism an ever-changing, irregular body outline?
What sickness is common in areas of the world where unsanitary conditions prevail?
What protozoans produce shell made of calcium carbonate?
What are protozoa that secrete intricate shell made of silica?
What hairlike protections cover the paramecium?
What nucleus found in the paramecium controls the basic activities of the organism?
What nucleus found in the paramecium functions in reproduction?
What dart like structures does the paramecium shoot out when it is attacked?
What cavity of a paramecium resembles a funnel?
In what type of reproduction do two paramecia exchange nuclear material, then undergo repeated divisions?
What spore-forming protozoa make up almost all parasites requiring two hosts?