![]() ![]() ![]() Segmented worms -earthworms, leeches and some sea floor worms -Body Structure -made up of many linked sections called segments -have a long string of nerve tissue called a nerve cord. have a very efficient tube-like digestive system.ġ5 -earthworms, leeches and some sea floor worms Some are free-living, some are parasites. Roundworms (e.g: Hook worms, C.Elegans) -Can live in nearly any moist environment. Can live in more than one host during their lifetime. body is adapted to absorbing food from host’s digestive system. Also have cells that can pick up odors.ġ1 - body is adapted to absorbing food from host’s digestive system.įlatworms -Tapeworms -Parasitic flatworm. Have Eyespots: two dots that detect light. Also predators that will attack smaller animals. Some reproduce asexually by breaking into pieces.ħ Flatworms - (tapeworms, planarian and flukes) - flat and soft like jelly -Many are parasites who takes food from its host Some flat worms are free living organisms that glide over rocks, or swim in ponds.ĩ -Also predators that will attack smaller animals.įlatworms -Planarians -Free living flatworms that are -scavengers: feed on dead or decaying material. Other species have one individual with both male & female organs. Many species have separate male and female individuals. Exhibit both sexual and asexual reproduction. have sense organs that are sensitive to light, touch, and vibrations. Nervous system -the simplest organisms with a brain. Segmented worms.(Annelida)īody structure -worms are invertebrates with long narrow bodies without legs -worms have bilateral symmetry -worms have a head, tail, tissue, organs and organ systems. ![]() Describe the characteristics of each worm phyla.ġ. (Sec 1-4) Goals: Identify the three main phyla of worms. ![]()
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