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Classification Presentation. Introduction. Basic Information Morphological Characteristics Nutrition Reproduction Example Cool Facts. Platyhelminthes Rotifera Nematoda Nemertea. Platyhelminthes. Basic Information. Platyhelminthes (Scientific name) Flatworms (Common name).

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Introduction
Introduction

  • Basic Information

  • Morphological Characteristics

  • Nutrition

  • Reproduction

  • Example

  • Cool Facts

  • Platyhelminthes

  • Rotifera

  • Nematoda

  • Nemertea



Basic information
Basic Information

  • Platyhelminthes (Scientific name)

  • Flatworms (Common name)

  • Most are in marine, freshwater, and moist terrestrial habitats

  • Few are parasitic


Morphological characteristics
Morphological Characteristics

  • Bilateral symmetry

  • Triploblastic

  • Respire by Diffusion

  • Invertebrate

  • Acoelomate

  • Incomplete Digestive system

  • Excretory system

  • Protonephridia


Nutrition
Nutrition

  • Free-living:

    -Carnivores

    -Scavengers

  • Parasites:

    -Blood

    -Tissue fluids

    -Pieces of cells


Reproduction
Reproduction

  • Hermaphrodites

  • Asexual Reproduction


Example
Example

  • Class: Cestoda

  • Parasite

  • Live in digestive track of vertebrate

  • Taeniasaginata

  • Beef tapeworm




Basic information1
Basic Information

  • Rotifera(Scientific name)

  • Wheel Animal (Common name)

  • Microscopic

    Animal

  • Live in moist area


Morphological characteristics1
Morphological Characteristics

  • Multicellular

  • Mostly soft body

  • Cuticle

  • Cement gland

  • Not Segmented

  • Complete Digestive System

  • Cryptobiosis

  • Pseudocelom


Nutrition1
Nutrition

  • Primarily Omnivorous

    • Filter food from water

    • Eat dead or decomposing organic materials


Reproduction1
Reproduction

  • Parthenogenesis

  • Sexual Dimorphism


Example1
Example

  • Class: Bdelloidea

  • Well-developed corona

  • Evolutionary role of sexual reproduction

  • Diversified into more than 300 species but are fairly similar to other sexually reproducing rotiferaspecies




Basic information2
Basic Information

  • Nematoda (Scientific name)

  • Roundworms (Common name)

  • Most are parasitic


Morphological characteristics2
Morphological Characteristics

  • Unique Epidermis

  • Invertebrate

  • Muscles are all aligned longitudinally

    • Little sensory apparatus

  • Bilateral symmetry

  • Pseudocoelom

  • Lack of cilia

  • Lack of respiratory system

  • Cryptobiosis


Nutrition2
Nutrition

  • Carnivorous

  • Many terrestrial species feed on plant roots

  • Some eat dead organic material



Example2
Example

  • Class: Secernentea

  • Parasitic

  • Ascaris lumbricoides

  • Giant roundworms

  • Infect human

  • Most common




Basic information3
Basic Information

  • Nemertea (Scientific name)

  • Ribbon Worms (Common name)

    • More complicated and well developed than the seemingly similar flatworms

    • Most are marine


Morphological characteristics3
Morphological Characteristics

  • Lack of specialized gas exchange structures

  • System of Blood Vessels

    • Proboscis

    • Rhynchocoel

    • Acoelomate

    • Complete digestive system

    • Well-developed nervous system

    • Highly flexible and contractible


Nutrition3
Nutrition

  • Carnivorous

  • Hunt


Reproduction3
Reproduction

  • Gonochoristic

  • Few terrestrial species are Hermaphroditic

  • No Permanent Gonads

  • Pilidium Larva

    • Desor and Iwata larvae

    • Most species can reproduce asexually by fragmentation, even multiple times


Example3
Example

  • Class: Anopla

  • Lineus longissimus

  • Longest

  • Mucus contains a relatively strong neurotoxin



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