Pharynx - used for suckling food in (the mouth is at the end of the pharynx) Eyespot - simple eye, can detect light Flame cells - located along the lateral edges, used for excretionĪ.k.a “flukes” live in mouth, skin, or gills of host Primary host = the host in which a parasite reproduces sexually Intermediate host = the host in which asexual reproduction occurs They can also regenerate body parts and will sometimes split in half to reproduce (FISSION)ġ2 Ganglia - planarian can process information about their environment Planarianĩ Planaria lives in freshwater, mostly a scavenger but can also feed on protists Thin bodies allow for materials to diffuse (respiration, excretion, etc) Flame Cell – specialized cells that remove excess waterĥ Response Ganglia – group of nerve cells that control the body (like a brain) Eyespot – group of cells that can detect light (like an eye)Ĭilia helps them glide through the water Muscle cells help them twist and turnħ Reproduction Sexual Reproduction – most flatworms are hermaphrodites (have both male and female sex organs) Asexual Reproduction by fission – flatworms can split in two and regenerateĨ Groups of Flatworms CLASS TURBELLARIA - free living flatworms Acoelomates = without coelom COELOM = fluid filled body cavityįree-living - carnivores or scavengers they have a digestive cavity, mouth and pharynx Parasites – feed on blood, tissues or pieces of cells from within a HOST Most do not have a complete digestive system because they absorb material directly from hostĤ Respiration, Circulation, and Excretion Presentation on theme: "FLATWORMS Belong to the KINDGOM ANIMALIA PHYLUM PLATYHELMINTHES."- Presentation transcript:ġ FLATWORMS Belong to the KINDGOM ANIMALIA PHYLUM PLATYHELMINTHESĢ Characteristics Three germ layers (endoderm, ectoderm, mesoderm)īilateral symmetry Cephalization (has a head) 4.
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