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Bio chap 28/29

An octopus is a cephalopod
What are the three parts of a mollusk body plan? Foot, mantle, visceral mass
A trochophore is the larval form of a mollusk.
Snail and slugs are gastropods.
Clams and oysters are bivalves.
What organ do mollusks use for gas exchange? Gill
What type of circulatory system does a mollusk have? An open circulatory system
What do we call the tooth-like tongue of a mollusk? Radula
What type of symmetry do most mollusks have? Radial
What is the central section that holds a mollusks organs called? Visceral mass
What is the visceral mass of a mollusk covered by? The mantle
Which mollusk has the largest brian? Cephalopods
What are the 3 major classes of mollusks? Gastropods, cephalopods, bivalves
What are the dividing walls between each segment in an annelid called? Septa
What are the bristles on each segment of an annelid called? Setae
What is the primitive brain in an annelid called? Cerebral ganglia
What are the common names for the 3 groups of annelids? Earthworms, leeches, marine worms
What type of circulatory system do annelids have? Closed circulatory system
What is the common name for Polychaeta? Marine worms
What is the common name for Oligochaeta? Earthworms
What is the common name for Hirudina? Leeches
Which type of annelid has suckers at both ends? Leeches
Name 4 parts of the digestive system of an earthworm. Mouth, pharynx, crop, gizzard, intestines
What is the midbody region of an arthropod called? Thorax
What are the openings in an arthropod that allow air to enter their body? Spiracles
Malpighian tubes are part of which system in arthropods? Excretory system
What is the system of air tubes in an arthropod called? Trachea
Name 3 characteristics of arthropods. Jointed appendages, segmented body, hard external skeleton, open circulatory system
Name the 3 body regions of an arthropod. Head thorax abdomen
What are 2 functions of an arthropod’s exoskeleton? Protection from predators, prevents water loss
What are the openings of the respiratory system of an arthropod called? spiracles
What are the breathing tubes of an arthropod called? Trachea
What system do the Malpighian tubules of an arthropod belong to? Excretory system (they filter out wastes)
Describe the eyes of an arthropod. Compound- each eye is composed of hundreds of smaller eyes
Appendages found on arachnids that are used to attack prey. Chelicera
Second pair of appendages (from the anterior end) found on an arachnida. Pedipalp
Silk-producing organ located on the posterior end of an arachnid. Spinnerette
What do arachnids do to their prey before they eat it? They inject a poison that liquefies the prey
Name three examples of arachnids. Spiders, ticks, scorpions, horseshoe crab
Name 3 characteristics of crustaceans. Mandible for eating, gills for breathing, carapace to protect cephalothorax
Name 3 examples of crusteceans. Crayfish, lobsters, shrimp, crabs
Name 3 characteristics of insects. Wings for flying, specialized mouthparts, undergo metamorphosis, developed social systems
Name 3 characteristics of echinoderms. 5 part radial symmetry, water vascular system, skin gills, internal skeleton
What are the tiny plates of calcium carbonate that form the skeleton of an echinoderm called? Ossicles
Name 3 examples of echinoderms. Starfish, sand dollar, sea cucumber, sea urchin
Created by: 591157087707092



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