function of Muscular foot locomotion function of visceral mass contains internal organs function of mantle covers the visceral mass what is the mantle cavity a water filled chamber that houses the gills radula a rasping organ used for scraping up food Do all mollusc have radula Most have what do bright colors signify toxic, don't eat me what kind of a system do mollusc have that nematodes and flatworm miss circulatory diff grps of mollusc gastropods, cephalopods, bivalves largest grp of mollusc gastropods which group of mollusc live on land gastropods distinct feature of gastropods A single spiral shell and a distinct head with eyes on tips of tentacles Function of shell in mollusc For protection when the animal feels threatened How do mollusc breathe By lining of the mantle cavity how are slugs different from other mollusc They don't have a shell and mantle How do slugs breathe slug have projections on them that function as gills Ex. of bivalves clams, oysters, mussels and scallops describe Bivalve shells two halve shells that are hinged together How do bivalves feed suspension feeders function of mantle in bivalves for housing the gills. in Bivalves-Gills function gas exchange as well as for feeding a function of Where are bivalves found found in the Mud Are bibalves motile or sedentery sedentary can skitter along the sea floor by flapping its shell 1) mussel 2) scallop scallop flap its shell and Nautilus is an example of Cephalopod is the example of Which mollusc is the most agile and fast at moving cephalopod which cephalopod has a shell and which cephalopd misses one squid has a shell, while octopus misses a shell which mollusc has the most sophisticated eyes in the animal kingdom cephalopods which phylum has the most sophisticated eyes mollusc how do mollusc capture their prey mollusc use tentacles how do mollusc rip and crush the prey mollusc have radulla Where is the mouth in the cephalopod near the foot which is the most intelligent invertebrates octopus Annelids are worms with 1)scales 2)segments segments annelids- Phylum is phylum Annelida Ex of annelids Earthworm, leeches, polychaetes use of segmented bodies in annelids makes the body annelids are flexible what does segmented body in annelids help in? in annelids, burrowing and crawling in the soil Which are the three systems found in annelids nervous system made up of brain and nerve cord excretory system: dispose fluid waste digestive tract- passes from mouth to anus which system in annelids is not segemented in annelids the excretory system is the only one. open circulatory system Blood is pumped thro blood vessels that opens into the body cavity and so organs are bathed in blood Closed circulatory system Blood circulates the body through vessels It distributes nutrients and oxygen he body throughtout the body Ex of open circulatory system mollusc, arthropods Ex of closed circulatory system annelids and vertebrates what is the function of thickened region in earthworms to pick eggs and receive sperms A single Earthworm can produce both eggs and sperms so it is called a hermaphrodite which is the largest grp of annelids polychaetes where do polychaetes name come from name came from hair or bristles polychaetes have appendages filled with 1) water 2)blood blood in polychates how do polychaetes breath gills what function as gills in polychaetes in polychaetes the appendages Leeches are famous for blood sucking habit who are used in medicine leeches are used how are leeches used in medicine to produce anticoagulant to dissolve blood clots formed during surgery or heart disease arthropods-phylum is arthropoda ex of arthropoda crayfish, crabs, spiders, ticks, insects, spiders, barnacles, lobsters what does phylum arthropoda mean this phylum means jointed appendages eg of annelid and plathyhelminthes that are parasitic leech and tapeworm Arthropods body are covered by arthropods- have exoskeleton what is molting sheding of the shell Different appendages in arthropods appendages found are head, thorax and the abdomen Describe the appendages in arthropods head: sensory antenna, eyes and mouth. Thorax: defensive appendages abdomen: swimming appendages Chelicerates are arthropods ex. of Chelicerates Horseshoe crabs, spiders, ticks, mites and scorpions collectively called arachanids arachanids include mites, spiders, ticks, and scorpions millipedes have how many legs in each seg 2 legs in each seg centipedes have how many legs in each seg 1 leg in each seg ex of Crustaceans Crabs, lobsters, crayfishes, and barnacles how do barnacles feed They strain the food from water using jointed appendages Why are insects considered the most successful animal? They have segmented body, an exoskeleton, jointed appendages, the cuticles is water proof, metamorphosis