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47 Cards in this Set
- Front
- Back
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5 characteristics of platyhelminthes?
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triploblastic
Bilateral symmetry Display cephalization Dorsoventrally flattened Genital apertures on ventral surface |
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what is cephalization?
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Head development where sensory organs tend to be
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what is Syncytial epidermis?
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Multinucleated cell mass from fusion of cells
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In what does Syncytial epidermis occur?
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Monogeneans, Trematodes, and Cestodes
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Muscular system of
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circular, longitudinal, and oblique (transverse) fibers
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Aceolomate...
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Body is compact with no space between internal structures
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The parenchyma
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fills in any body space
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what is parenchyma?
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Solid mesodermal, supportive tissue
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Some have eyespots to...
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sense light and dark
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what is platyhelminthese excretory system like?
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two lateral canals with branches bearing flame cells (protonephridia)
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Nervous system:
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2 anterior ganglia connected to longitudinal and transverse nerve cords
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what don't platyhelminthes have?
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respiratory, circulatory, or skeletal system
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Sexual Reproduction?
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hermaphroditic and internal
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which are free living and which are parasitic?
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tubellarians are freeliving
Monogeneans, Trematodes, and Cestodes are parasitic |
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Rhabdites
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Secretions released to form mucus
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Class Tuberllaria...example? what is on the side of their heads?
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Planaria
auricle |
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circular things in cross section of planaria/
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gut diverticulum
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Class Monogenea is mostly...
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ectoparasites of aquatic animals
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Class Monogenea has opisthaptor...
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Posterior hook attachment
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what is the first intermediate host and the final hostin Class Trematoda?
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mollusk and vertebrate
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Subclass Aspidogastrea, what animal?
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Tread flukes
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Ventral sucking surface composed of
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aveoli
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Polyembryony and Anisogamy...
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asexual and sexual
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what subclass are the flukes in?
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Digenea
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Body of Class Cestoda is...
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polyzoic
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What are the 4 segments of the body in class Cestoda?
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1. Scolex (head)
2. Immature proglottid 3. Mature Proglottid 4. Gravid Proglottid |
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what does neotonic mean in class Cestodaria?
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Larva may be able to reproduce without adult stages
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what subclass is true tapeworms in?
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Eucestoda
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In Order Pseudophyllidae what kind of scolex do they have?
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Bothraited---shalow sucking grooves
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In Order Pseudophyllidae where are the Gential aperature located?
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medially
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what kind of scolex do Order Proteocephalata have?
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Acetabulated scolex with apical gland (cup-like with a musclular wall)
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gravid proglottid...looks
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red and veiny
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what are 2 adaptations of Class Turbellaria?
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mucus prevents desication and
mucus helps them to escape predation |
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prohaptor----what class, and what is it?
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Monogenea and anterior hook
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what are auricles?
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chemoreceptors
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what genus is in class Mongenea?
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neopolystoma
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what is life cycle of Class Monogenea?
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Adult
eggs passed into environment eggs hatch in water gyrodactyloid (larvae released) larval stage searched for host matures in host |
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what is cecum and what class is it in?
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blind pouch, Class Trematoda
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lifecycle of Subclass Aspidogastrea
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adults found in the pericardial sac of mollusca
egg or larvae passed to aquatic system through siphon cotylocium swims around till brought in by incurrent siphon cotylicium migrates to pericardial sac an matures into adult |
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Life cycle of Subclass Digenea.
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egg
miracidium germinal mass cercaria meracercaria adult |
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what is the definitive host of Asian Liver flukes and what subclass are they in?
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humans and Digenea
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Since Digenea has such a specific life cycle...
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they have reduced competeition between closely related parasites
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what is one feature of Class Cestoda?
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Ocelli
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life cycle of subclass Cestodaria
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Adult
eggs released into water through feces or burrowing through body wall crustacean eats eggs and lycophore larvae hatch out penetrate gut into hencocoel forming procercoid develops into pleurocercoid form crustacean eaten and pleurocercoid digested out migrate to proper location |
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longer scolex and scolex with eyes
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bothraited and acetabulated
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echinococcus---def? int?
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dogs are def and herb is int.
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Genus Taenia? what order?
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bladderworm ccyst.
Cyclophyllidea |
