Bio chap 28/29
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An octopus is a | cephalopod
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What are the three parts of a mollusk body plan? | Foot, mantle, visceral mass
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A trochophore | is the larval form of a mollusk.
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Snail and slugs are | gastropods.
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Clams and oysters are | bivalves.
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What organ do mollusks use for gas exchange? | Gill
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What type of circulatory system does a mollusk have? | An open circulatory system
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What do we call the tooth-like tongue of a mollusk? | Radula
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What type of symmetry do most mollusks have? | Radial
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What is the central section that holds a mollusks organs called? | Visceral mass
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What is the visceral mass of a mollusk covered by? | The mantle
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Which mollusk has the largest brian? | Cephalopods
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What are the 3 major classes of mollusks? | Gastropods, cephalopods, bivalves
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What are the dividing walls between each segment in an annelid called? | Septa
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What are the bristles on each segment of an annelid called? | Setae
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What is the primitive brain in an annelid called? | Cerebral ganglia
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What are the common names for the 3 groups of annelids? | Earthworms, leeches, marine worms
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What type of circulatory system do annelids have? | Closed circulatory system
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What is the common name for Polychaeta? | Marine worms
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What is the common name for Oligochaeta? | Earthworms
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What is the common name for Hirudina? | Leeches
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Which type of annelid has suckers at both ends? | Leeches
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Name 4 parts of the digestive system of an earthworm. | Mouth, pharynx, crop, gizzard, intestines
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What is the midbody region of an arthropod called? | Thorax
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What are the openings in an arthropod that allow air to enter their body? | Spiracles
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Malpighian tubes are part of which system in arthropods? | Excretory system
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What is the system of air tubes in an arthropod called? | Trachea
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Name 3 characteristics of arthropods. | Jointed appendages, segmented body, hard external skeleton, open circulatory system
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Name the 3 body regions of an arthropod. | Head thorax abdomen
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What are 2 functions of an arthropod’s exoskeleton? | Protection from predators, prevents water loss
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What are the openings of the respiratory system of an arthropod called? | spiracles
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What are the breathing tubes of an arthropod called? | Trachea
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What system do the Malpighian tubules of an arthropod belong to? | Excretory system (they filter out wastes)
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Describe the eyes of an arthropod. | Compound- each eye is composed of hundreds of smaller eyes
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Appendages found on arachnids that are used to attack prey. | Chelicera
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Second pair of appendages (from the anterior end) found on an arachnida. | Pedipalp
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Silk-producing organ located on the posterior end of an arachnid. | Spinnerette
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What do arachnids do to their prey before they eat it? | They inject a poison that liquefies the prey
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Name three examples of arachnids. | Spiders, ticks, scorpions, horseshoe crab
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Name 3 characteristics of crustaceans. | Mandible for eating, gills for breathing, carapace to protect cephalothorax
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Name 3 examples of crusteceans. | Crayfish, lobsters, shrimp, crabs
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Name 3 characteristics of insects. | Wings for flying, specialized mouthparts, undergo metamorphosis, developed social systems
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Name 3 characteristics of echinoderms. | 5 part radial symmetry, water vascular system, skin gills, internal skeleton
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What are the tiny plates of calcium carbonate that form the skeleton of an echinoderm called? | Ossicles
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Name 3 examples of echinoderms. | Starfish, sand dollar, sea cucumber, sea urchin
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